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active, confirmed
Below is the subset of Vent Fields that contain the taxonomy term (Activity, Tectonic Setting, Region, Ocean, National Jurisdiction, Temperature Category, or MGDS Feature ID) listed above.
You can sort the list below by clicking on a column header.
| Vent Field Name ID | Activity | Tectonic Setting |
Region |
Latitude | Longitude | Maximum or Single Reported Depth | Year and How Discovered |
|---|---|---|---|---|---|---|---|
| Isafjardardjup bay | active, confirmed | 66.0500 | -22.6500 | 3 | 1986 or earlier, likely from shore or by SCUBA | ||
| El Hierro, Tagoro | active, confirmed | intra-plate volcano | 27.6200 | -17.9900 | 350 | 2016 submersible JAGO, 2017 ROV Liropus 2000, 2011 water column sampling | |
| Prony Bay | active, confirmed | other | -22.3333 | 166.8333 | 50 | 1979 or earlier, likely SCUBA | |
| Espalamaca | active, confirmed | intra-plate volcano | 38.5500 | -28.6000 | 50 | 2010 or earlier likely SCUBA | |
| Dorado Outcrop | active, confirmed | other | 9.0800 | -87.0950 | 3000 | 2013 ROV Jason Dive J2-751 | |
| Aden | active, confirmed | mid-ocean ridge | Aden Ridge | 11.9500 | 43.6667 | 1600 | 1984 submersible Cyana |
| Panarea | active, confirmed | arc volcano | Aeolian Arc, Tyrrhenian Sea | 38.6583 | 15.1000 | 200 | 1800's shallow vents; 1995 deeper vents ROV Comex |
| Vulcano | active, confirmed | arc volcano | Aeolian Arc, Tyrrhenian Sea | 38.4000 | 15.0000 | 8 | 1960's shallow vents |
| Enarete Seamount | active, confirmed | arc volcano | Aeolian Arc, Tyrrhenian Sea | 38.6250 | 14.0000 | 600 | 2011 ROV Hercules; 1976 Fe crusts only; 1997 manganese crust only; 2007 plume only |
| Palinuro | active, confirmed | arc volcano | Aeolian Arc, Tyrrhenian Sea | 39.5500 | 14.7000 | 1000 | 2006 ROV Cherokee; 1968 manganese crust only; 1984 deposits only; 1993 TV profile did not confirm |
| Piip Submarine Volcano | active, confirmed | arc volcano | Aleutian Arc, western | 55.4167 | 167.2717 | 500 | 1990 Mir submersible; 1981 R/V "Vulcanolog" cruise; 1987 (or 1986) echo-sounder fluid discharge |
| Kagamil Island | active, confirmed | arc volcano | Aleutian Arc, western | 52.9800 | -169.7200 | 5 | 2007 SCUBA |
| Manuk Island | active, confirmed | arc volcano | Banda/Sunda Arc | -5.5300 | 130.2920 | 2 | |
| Sangeang Island | active, confirmed | arc volcano | Banda/Sunda Arc | -8.1300 | 119.0900 | 2 | 1991 or earlier, from beach |
| Pulau Weh | active, confirmed | arc volcano | Banda/Sunda Arc | 5.8166 | 95.3000 | 8 | 1982 or earlier, likely by SCUBA |
| Banda Api | active, confirmed | arc volcano | Banda/Sunda Arc | -4.5250 | 129.8710 | 3 | 1993 SCUBA |
| Matupi Harbour, Rabaul caldera, New Britain Island | active, confirmed | arc volcano | Bismarck Arc | -4.2700 | 152.2000 | 30 | 1961 or earlier intertidal |
| Hook Ridge | active, confirmed | back-arc spreading center | Bransfield Strait | -62.1940 | -57.2745 | 1080 | 1997 hot sediment; 1995 plume only; 1999 even hotter sediment |
| Deception Island | active, confirmed | back-arc spreading center | Bransfield Strait | -62.9500 | -60.6500 | 100 | 1995 or earlier intertidal |
| Macdonald Seamount | active, confirmed | intra-plate volcano | Central Pacific | -28.9833 | -140.2500 | 150 | 1989 submersible Cyana |
| Vailulu'u Seamount | active, confirmed | intra-plate volcano | Central Pacific | -14.2167 | -169.0667 | 1000 | 2005 submersible Pisces V; 2000 plume only |
| Teahitia seamount | active, confirmed | intra-plate volcano | Central Pacific | -17.5670 | -148.8167 | 1460 | 1983 submersible Cyana |
| Loihi Seamount | active, confirmed | intra-plate volcano | Central Pacific | 18.9500 | -155.2500 | 4800 | 1985 bottom photography R/V Hakuho Maru; 1987 submersible Alvin |
| Bounty Seamount | active, confirmed | intra-plate volcano | Central Pacific | -25.1667 | -129.4000 | 420 | 1999 submersible Nautile; 1989 plume only |
| Solitaire Field | active, confirmed | mid-ocean ridge | CIR | -19.5450 | 65.8500 | 2630 | 2009 submersible Shinkai 6500; 2006 plume only |
| Dodo Field | active, confirmed | mid-ocean ridge | CIR | -18.3470 | 65.3050 | 2730 | 2009 submersible Shinkai 6500; 2006 plume only |
| Kairei Field | active, confirmed | mid-ocean ridge | CIR | -25.3195 | 70.0400 | 2460 | 2000 ROV Kaiko; 1993 plume only |
| Edmond Field | active, confirmed | mid-ocean ridge | CIR | -23.8780 | 69.5960 | 3320 | 2001 ROV Jason |
| Punta Banda | active, confirmed | other | Coastal Baja California | 31.7500 | -116.7500 | 30 | 1960's commercial abalone divers |
| Bahia Concepcion | active, confirmed | other | Coastal Baja California | 26.6667 | -111.8333 | 15 | 1968 or earlier, likely by SCUBA |
| White Point, Palos Verde, California | active, confirmed | other | Coastal California | 33.7000 | -118.3167 | 10 | 1984 or earlier, likely by SCUBA |
| Capo Palinuro | active, confirmed | other | Coastal Italy | 40.0167 | 15.2667 | 30 | 1990 or earlier, likely by SCUBA |
| Ischia Island, Gulf of Naples | active, confirmed | other | Coastal Italy | 40.7306 | 13.9500 | 10 | 1954 or earlier, from the beach |
| Capo Miseno, Gulf of Naples | active, confirmed | other | Coastal Italy | 40.7833 | 14.0833 | 20 | 1982 or earlier, likely by SCUBA |
| Punta Mita, Bahia de Banderas | active, confirmed | other | Coastal Mexico | 20.7700 | -105.5200 | 10 | 1997 photo/video most likely by SCUBA |
| Jaco Scar | active, confirmed | arc volcano | Costa Rica fore arc | 9.1175 | -84.8397 | 1790 | 2009 submersible Alvin |
| ESR, E2 | active, confirmed | back-arc spreading center | East Scotia Ridge | -56.0917 | -30.3250 | 2641 | 2009 towed video; 1999 plume only; 2010 ROV Isis |
| ESR, E9 | active, confirmed | back-arc spreading center | East Scotia Ridge | -60.0500 | -29.9300 | 2402 | 2009 towed video; 1999 plume only; 2010 ROV Isis |
| Magic Mountain | active, confirmed | mid-ocean ridge | Explorer Ridge | 49.7500 | -130.2667 | 1850 | 1984 submersible Pisces IV |
| Aurora | active, confirmed | mid-ocean ridge | Gakkel Ridge | 82.8833 | -6.2500 | 4100 | 2001 shimmering water in camera tow and sulfide chimney in dredge |
| Precious Stone Mountain | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.2200 | -101.4900 | 1700 | 2009 deep-tow video and TV grab |
| Tempus Fugit | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7683 | -85.9100 | 2560 | 2011 ROV Little Hercules |
| Calyfield | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.8300 | -89.6083 | 1660 | 2002 submersible Alvin |
| Pegasus | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7500 | -88.2000 | 2000 | 2011 ROV Little Hercules |
| Rose Garden | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.8058 | -86.2267 | 2550 | 1977 submersible Alvin; 1976 plume and photographs of clam shells did not confirm activity (note: Rose Garden is used here as the name of the vent field, but Rose Garden vent site itself not discovered until 1979) |
| Uka Pacha | active, confirmed | mid-ocean ridge | Galapagos Rift | 0.7700 | -88.3000 | 2100 | 2011 ROV Little Hercules |
| Navidad | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.5300 | -94.0750 | 2380 | 2005 towed video Medea |
| Iguanas-Pinguinos | active, confirmed | mid-ocean ridge | Galapagos Rift | 2.1000 | -91.9350 | 1640 | 2005 towed video Medea |
| Galapagos Mounds | active, confirmed | mid-ocean ridge | Galapagos Rift | 1.4500 | -86.1665 | 2700 | 1977 submersible Alvin |
| Sea Cliff | active, confirmed | mid-ocean ridge | Gorda Ridge | 42.7550 | -126.7083 | 2800 | 1988 submersible Sea Cliff; 1985 plume only; 1986 dredge and camera tow did not confirm activity |
| NESCA | active, confirmed | mid-ocean ridge | Gorda Ridge | 41.0000 | -127.4917 | 3300 | 1988 submersible Alvin; 1986 dredge and photographs did not confirm activity |
| Guaymas Basin, Southern Trough | active, confirmed | mid-ocean ridge | Gulf of California | 27.0148 | -111.4109 | 2000 | 1982 submersible Alvin; 1980 DeepTow CTD and dredging |
| Pescadero Basin, Auka | active, confirmed | mid-ocean ridge | Gulf of California | 23.9567 | -108.8618 | 3685 | 2015 ROV Doc Ricketts; 1990 or earlier plume only |
| Alarcon Rise, Ja Sit | active, confirmed | mid-ocean ridge | Gulf of California | 23.3765 | -108.5315 | 2304 | 2012 ROV Doc Ricketts |
| Guaymas Basin, Northern Trough_2 | active, confirmed | mid-ocean ridge | Gulf of California | 27.4110 | -111.3879 | 1800 | 2015 ROV Hybis |
| Alarcon Rise, Meyibo | active, confirmed | mid-ocean ridge | Gulf of California | 23.3553 | -108.5443 | 2295 | 2012 ROV Doc Ricketts |
| Alarcon Rise, Tzab-ek | active, confirmed | mid-ocean ridge | Gulf of California | 23.3526 | -108.5597 | 2249 | 2015 ROV Doc Ricketts |
| Ringvent | active, confirmed | mid-ocean ridge | Gulf of California | 27.5083 | -111.6792 | 1740 | 2016 submersible Alvin; 2009 towed camera/CTD/bottles |
| Santorini | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.4333 | 25.4000 | 400 | 1960's, likely by SCUBA; 2006 deeper vents HOV Thetis and AUV SeaBED |
| Kolumbo | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.5250 | 25.4833 | 500 | 2006 ROV Hercules |
| Nisiros | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.5600 | 27.1400 | 18 | 1994 or earlier, likely by SCUBA |
| Yali | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.6600 | 27.1300 | 3 | 1991 or earlier, from beach |
| Kos | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.8500 | 27.2500 | 10 | 1983 or earlier, likely by SCUBA |
| Methana | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 37.6150 | 23.3360 | 10 | nearshore: since antiquity; offshore: 1997 SCUBA |
| Milos | active, confirmed | arc volcano | Hellenic Arc, Aegean Sea | 36.6667 | 24.5167 | 200 | 1987 or earlier, likely by SCUBA; 1992 Minirover ROV deeper sites |
| Sumisu Caldera | active, confirmed | arc volcano | Izu-Bonin Arc | 31.4667 | 140.0667 | 690 | 1998 submersible Shinkai 2000 |
| Myojin Knoll | active, confirmed | arc volcano | Izu-Bonin Arc | 32.1033 | 139.8683 | 1360 | 1996 submersible Shinkai 2000 |
| Mokuyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.3200 | 140.5800 | 1200 | 1990 submersible Shinkai 2000 |
| Doyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 27.6833 | 140.8167 | 520 | 1990 submersible Shinkai 2000 |
| Suiyo Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 28.5750 | 140.6417 | 1380 | 1991 submersible Shinkai 2000 |
| Kaikata Seamount | active, confirmed | arc volcano | Izu-Bonin Arc | 26.7000 | 141.0833 | 930 | 1988 submersible Shinkai 2000; 1985 dredge only |
| Omuro Hole | active, confirmed | arc volcano | Izu-Bonin Arc | 34.5467 | 139.4417 | 200 | 2012 ROV Hyper-Dolphin |
| North Cleft, low temperature | active, confirmed | mid-ocean ridge | JdF Ridge | 44.8833 | -130.2667 | 2250 | 1987-1989 camera/CTD tows |
| Mothra Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9233 | -129.1082 | 2270 | 1996 ROV ROPOS; 1986 plume only |
| South Cleft | active, confirmed | mid-ocean ridge | JdF Ridge | 44.6667 | -130.3667 | 2250 | 1981 deep-tow photographs; 1984 submersible Alvin |
| Floc | active, confirmed | mid-ocean ridge | JdF Ridge | 46.3133 | -129.7050 | 2290 | 1993 DEEPTOW and submersible Alvin |
| East Blanco Depression | active, confirmed | mid-ocean ridge | JdF Ridge | 44.2170 | -129.6250 | 3460 | 1994 ROV U.S. Navy's Advanced Tethered Vehicle |
| Source | active, confirmed | mid-ocean ridge | JdF Ridge | 46.1550 | -129.8100 | 2055 | 1993 submersible Alvin |
| Sasquatch Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9969 | -129.0662 | 2200 | 2000 submersible Alvin |
| Central Cleft, off-axis | active, confirmed | mid-ocean ridge | JdF Ridge | 44.7583 | -130.2750 | 2200 | 2000 ROV Tiburon |
| Not Dead Yet | active, confirmed | mid-ocean ridge | JdF Ridge | 46.6899 | -129.3772 | 2419 | 2007 ROV Jason II; 1991 camera tow did not confirm activity |
| Salty Dawg Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9822 | -129.0756 | 2200 | 1995 submersible Alvin, followed by ROV ROPOS |
| Flow | active, confirmed | mid-ocean ridge | JdF Ridge | 46.5250 | -129.5783 | 2390 | 1993 ROV ROPOS |
| Middle Valley, Dead Dog Vent Field | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4560 | -128.7088 | 2450 | 1990 HOV Alvin |
| North Cleft, high temperature | active, confirmed | mid-ocean ridge | JdF Ridge | 44.9800 | -130.2000 | 2300 | 1987 camera/CTD tows discovered low-temperature vents; 1988 submersible Alvin sampled low-temperature vents; 1990 submersible Alvin discovered black smoker |
| Middle Valley, Bent Hill Massive Sulfide | active, confirmed | mid-ocean ridge | JdF Ridge | 48.4341 | -128.6812 | 2440 | 1990 HOV Alvin, 1985 deposits only |
| Axial Seamount, ASHES | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9333 | -130.0140 | 1540 | 1984 submersible Alvin |
| Baby Bare Seamount | active, confirmed | mid-ocean ridge | JdF Ridge | 47.7100 | -127.7870 | 2600 | 1995 submersible Alvin |
| Axial Seamount, CASM | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9892 | -130.0272 | 1580 | 1983 submersible Pisces IV |
| Main Endeavour Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9487 | -129.0981 | 2220 | 1984 submersible Alvin; 1982 dredge only |
| Axial Seamount, International District | active, confirmed | mid-ocean ridge | JdF Ridge | 45.9266 | -129.9795 | 1544 | 1986 submersible Pisces IV |
| High-Rise Field | active, confirmed | mid-ocean ridge | JdF Ridge | 47.9666 | -129.0894 | 2200 | 1988 submersible Alvin |
| Havre | active, confirmed | arc volcano | Kermadec Arc | -31.0970 | -179.0340 | 1505 | 2015 ROV Jason II; 2002 plume only |
| Brothers volcano | active, confirmed | arc volcano | Kermadec Arc | -34.8667 | 179.0667 | 1800 | 1998 towed camera; 1996 dredging only |
| Macauley Caldera | active, confirmed | arc volcano | Kermadec Arc | -30.2140 | -178.7210 | 500 | 2002 towed camera TAN0205 cruise |
| Healy volcano | active, confirmed | arc volcano | Kermadec Arc | -34.9840 | 178.9990 | 1370 | 2005 submersible Pisces V; 1999 plume only |
| Rumble III volcano | active, confirmed | arc volcano | Kermadec Arc | -35.7333 | 178.4667 | 380 | 2000 towed camera; 1999 plume only |
| Rumble V volcano | active, confirmed | arc volcano | Kermadec Arc | -36.1333 | 178.1833 | 755 | 2001 towed camera; 1999 plume and dredged mussel shells |
| Tangaroa volcano | active, confirmed | arc volcano | Kermadec Arc | -36.3250 | 178.0333 | 890 | 2012 likely towed video or TV grab; 1999 plume only |
| Clark volcano | active, confirmed | arc volcano | Kermadec Arc | -36.4490 | 177.8400 | 930 | 2005 submersible Pisces V; 1999 plume only |
| Giggenbach volcano | active, confirmed | arc volcano | Kermadec Arc | -30.0333 | -178.7167 | 180 | 2005 submersible PISCES V; 2002 plume only |
| Vulkanolog | active, confirmed | arc volcano | Kermadec Arc | -30.6870 | -178.4530 | 130 | 1979 and 1998 (need to check references); 2002 plume not detected NZAPLUME II |
| Hinepuia volcanic center | active, confirmed | arc volcano | Kermadec Arc | -26.3900 | -177.2600 | 300 | 2013 HOV Shinkai 6500; 2004 plume and dredging NZAPLUME III expedition |
| Wright volcanic center | active, confirmed | arc volcano | Kermadec Arc | -31.8500 | -179.1880 | 1165 | 2005 submersible PISCES V; 2004 plume NZAPLUME III cruise |
| Grimsey Field | active, confirmed | mid-ocean ridge | Kolbeinsey Ridge | 66.6067 | -17.6542 | 400 | 1997 submersible Jago |
| Kolbeinsey Field | active, confirmed | mid-ocean ridge | Kolbeinsey Ridge | 67.0833 | -18.7167 | 110 | 1988 submersible GEO |
| Eyjafjördur | active, confirmed | mid-ocean ridge | Kolbeinsey Ridge | 65.8500 | -18.1333 | 65 | 1997, likely by SCUBA |
| Kraternaya Bight, Ushishir Volcano | active, confirmed | arc volcano | Kuril Arc | 47.5167 | 152.8000 | 60 | 1985 SCUBA |
| Hot Beach, Mendeleev Volcano | active, confirmed | arc volcano | Kuril Arc | 43.9760 | 145.7360 | 1 | 1990 or earlier, from the beach |
| Tow Cam | active, confirmed | back-arc spreading center | Lau Basin | -20.3169 | -176.1367 | 2700 | 2004 AUV ABE; 2004 plume only on previous cruise |
| CLSC, A3 | active, confirmed | back-arc spreading center | Lau Basin | -18.6000 | -176.4500 | 2500 | 1990 submersible Mir |
| Hine Hina | active, confirmed | back-arc spreading center | Lau Basin | -22.5300 | -176.6970 | 1900 | 1989 submersible Nautile |
| Mata Fitu | active, confirmed | arc volcano | Lau Basin | -14.9166 | -173.7833 | 2750 | 2010 towed camera |
| Kilo Moana | active, confirmed | back-arc spreading center | Lau Basin | -20.0532 | -176.1336 | 2620 | 2004 AUV ABE; 2004 plume only on previous cruise |
| Mata Tolu | active, confirmed | arc volcano | Lau Basin | -15.0049 | -173.7936 | 1900 | 2010 towed camera; 2009 plume and dredge only |
| Mata Ua | active, confirmed | arc volcano | Lau Basin | -15.0166 | -173.7833 | 2397 | 2012 ROV Quest 4000; 2010 plume only (towed camera did not confirm) |
| Tahi Moana 1 | active, confirmed | back-arc spreading center | Lau Basin | -20.6900 | -176.1800 | 2256 | 2008 commercial ROV; 2004 plume only |
| White Church | active, confirmed | back-arc spreading center | Lau Basin | -21.9612 | -176.5234 | 1960 | 1989 submersible Nautile; 2004 plume survey |
| Tafu | active, confirmed | back-arc spreading center | Lau Basin | -15.3833 | -174.2500 | 1400 | 2008 or 2009 commercial ROV; 2008 plume only; 2009 ROV Jason II |
| Tu'i Malila | active, confirmed | back-arc spreading center | Lau Basin | -21.9876 | -176.5678 | 1870 | 2005 ROV Jason II; 2004 plume only |
| FRSC, Fonualei South | active, confirmed | back-arc spreading center | Lau Basin | -17.5352 | -174.5668 | 1620 | 2012 ROV Quest 4000 |
| Tahi Moana 2 | active, confirmed | back-arc spreading center | Lau Basin | -21.9200 | -176.5330 | 1870 | 1989 submersible Nautile (need reference to check if activity confirmed); 2004 plume only; 2008 commercial ROV (report does not confirm activity) |
| TELVE | active, confirmed | back-arc spreading center | Lau Basin | -22.1667 | -176.6040 | 1760 | 2008 commercial ROV; 2003 plume only |
| Mariner | active, confirmed | back-arc spreading center | Lau Basin | -22.1800 | -176.6017 | 1910 | 2003 plume and camera tow; 2004 submersible Shinkai 6500 |
| Kulo Lasi | active, confirmed | back-arc spreading center | Lau Basin | -14.9200 | -177.2500 | 1478 | 2010 submersible Nautile |
| Misiteli | active, confirmed | back-arc spreading center | Lau Basin | -22.4700 | -176.7030 | 2050 | 2008 commercial ROV; 2003 plume only |
| Maka | active, confirmed | back-arc spreading center | Lau Basin | -15.4217 | -174.2850 | 1660 | 2008 commercial ROV; 2004 plume only; 2006 plume and chimney samples |
| Si'iSi'i | active, confirmed | back-arc spreading center | Lau Basin | -22.2900 | -176.6290 | 1950 | 2008 commercial ROV; 2003 plume only |
| ABE | active, confirmed | back-arc spreading center | Lau Basin | -20.7619 | -176.1910 | 2220 | 2004 AUV ABE; 2004 plume only on previous cruise |
| Niuatahi | active, confirmed | back-arc spreading center | Lau Basin | -15.3790 | -174.0196 | 1635 | 2009 ROV Jason II; 2003 plume only; 2004 dredging (SS11/2004 cruise); 2005 plume only; 2008 commercial ROV (report does not confirm activity) |
| Vai Lili | active, confirmed | back-arc spreading center | Lau Basin | -22.2151 | -176.6083 | 1764 | 1989 submersible Nautile |
| Kick'em Jenny submarine volcano | active, confirmed | arc volcano | Lesser Antilles Arc | 12.2833 | -61.6667 | 265 | 2003 ROV Eastern Oceanics; 1989 submersible Johnson-Sea-Link II (did not confirm activity); 2001 plume only |
| Champagne Hot Springs | active, confirmed | arc volcano | Lesser Antilles Arc | 15.2500 | -61.3830 | 5 | 2001 or earlier (assume SCUBA) |
| Montserrat Offshore Springs | active, confirmed | arc volcano | Lesser Antilles Arc | 16.7100 | -62.2300 | 10 | 1996 or earlier (assume SCUBA) |
| Vienna Woods | active, confirmed | back-arc spreading center | Manus Basin | -3.1667 | 150.2833 | 2500 | 1990 TV-grab (also same year, sampled by submersible Mir); 1985 (or 1986) camera tow vent fauna and inactive chimneys |
| Vienna Woods, Hydrothermal Field 4 | active, confirmed | back-arc spreading center | Manus Basin | -3.3712 | 150.0360 | 2240 | 1990 TV-grab |
| DESMOS Cauldron | active, confirmed | back-arc spreading center | Manus Basin | -3.6958 | 151.8717 | 2000 | 1990 deep-sea monitoring system (DESMOS) video and still cameras |
| PACMANUS field | active, confirmed | back-arc spreading center | Manus Basin | -3.7250 | 151.6700 | 1800 | 1991 deep-tow camera and video; 1995 submersible Shinkai 6500 |
| Solwara 13 | active, confirmed | back-arc spreading center | Manus Basin | -3.7320 | 151.7465 | 2000 | 2009 commercial ROV Fugro FV300; 1993 plume only |
| SuSu Knolls | active, confirmed | back-arc spreading center | Manus Basin | -3.8000 | 152.1000 | 1520 | 1996 towed camera/video; 1993 plume only |
| NE Pual | active, confirmed | back-arc spreading center | Manus Basin | -3.6754 | 151.7272 | 1875 | 2006 ROV Jason II |
| Solwara 11 | active, confirmed | back-arc spreading center | Manus Basin | -3.1667 | 147.1917 | 1500 | 2008 commercial ROV; 2000 submersible Nautile did not confirm activity |
| Solwara 17 | active, confirmed | back-arc spreading center | Manus Basin | -3.0380 | 147.5280 | 535 | 2009 commercial ROV Fugro FV300; 2008 plumes with some sites subsequently observed with ROV |
| Ruby | active, confirmed | arc volcano | Mariana Arc | 15.6200 | 145.5700 | 214 | 2006 ROV Jason II; 2003 plume only |
| East Diamante volcano | active, confirmed | arc volcano | Mariana Arc | 15.9300 | 145.6700 | 457 | 2004 ROV ROPOS; 2003 plume only |
| West Rota volcano | active, confirmed | arc volcano | Mariana Arc | 14.3250 | 144.8330 | 1150 | 2005 ROV Hyper-Dolphin; 2003 plume only; 2004 ROV ROPOS did not observe venting |
| Esmeralda Bank | active, confirmed | arc volcano | Mariana Arc | 14.9667 | 145.2500 | 323 | 1990 towed video and TV-grab; 1978 hydrothermal deposits only |
| Nikko volcano | active, confirmed | arc volcano | Mariana Arc | 23.0833 | 142.3333 | 600 | 1992 submersible Shinkai 6500; 1979 first observed discolored water above the seamount |
| Northwest Rota-1 volcano | active, confirmed | arc volcano | Mariana Arc | 14.6010 | 144.7750 | 599 | 2004 ROV ROPOS; 2003 plume only |
| Kasuga 3 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.3833 | 143.6000 | 1140 | 1987 submersible Alvin |
| Forecast | active, confirmed | arc volcano | Mariana Arc | 13.4000 | 143.9166 | 1470 | 1992 submersible Shinkai 6500 |
| Kasuga 2 Seamount | active, confirmed | arc volcano | Mariana Arc | 21.6000 | 143.6167 | 500 | 1987 submersible Alvin |
| Seamount X | active, confirmed | arc volcano | Mariana Arc | 13.2500 | 144.0200 | 1450 | 1994 or earlier submersible Shinkai 6500 |
| Northwest Eifuku | active, confirmed | arc volcano | Mariana Arc | 21.4850 | 144.0430 | 1604 | 2004 ROV ROPOS; 2003 plume only |
| Minami-Hiyoshi submarine volcano | active, confirmed | arc volcano | Mariana Arc | 23.4970 | 141.9400 | 80 | 2005 ROV HyperDolphin |
| Daikoku volcano | active, confirmed | arc volcano | Mariana Arc | 21.3240 | 144.1940 | 450 | 2004 ROV ROPOS; 2003 plume only |
| Maug Caldera | active, confirmed | arc volcano | Mariana Arc | 20.0200 | 145.2200 | 145 | 2003 SCUBA shallow vents; 2004 ROV ROPOS deeper vents; 2003 plume only deeper vents |
| TOTO Caldera | active, confirmed | arc volcano | Mariana Arc | 12.7167 | 143.5333 | 2960 | 2000 deep-tow camera (later, same year - ROV Kaiko); 1998 or earlier hydrothermal deposits dredged; 1998 plume only |
| Chamorro volcano | active, confirmed | arc volcano | Mariana Arc | 20.8100 | 144.7050 | 896 | 2016 ROV Deep Discoverer; 2003 plume only |
| Mariana Trough, Central Trough | active, confirmed | back-arc spreading center | Mariana Trough | 18.0467 | 144.7533 | 3676 | 1987 submersible Alvin |
| Alice Springs Field | active, confirmed | back-arc spreading center | Mariana Trough | 18.2103 | 144.7073 | 3640 | 1987 submersible Alvin; 1982 plume only |
| Pika | active, confirmed | back-arc spreading center | Mariana Trough | 12.9183 | 143.6483 | 2990 | 2003 submersible Shinkai 6500; 2003 plume only |
| Mariana Mounds | active, confirmed | back-arc spreading center | Mariana Trough | 18.0333 | 144.2833 | 3600 | 1987 submersible Alvin |
| Mariana Trough, 15.5 N | active, confirmed | back-arc spreading center | Mariana Trough | 15.4080 | 144.5090 | 4196 | 2015 plume only, 2016 ROV did not confirm |
| Snail | active, confirmed | back-arc spreading center | Mariana Trough | 12.9533 | 143.6200 | 2880 | 2003 ROV Jason II; 2003 plume only |
| Hafa Adai | active, confirmed | back-arc spreading center | Mariana Trough | 16.9570 | 144.8680 | 3294 | 2016 ROV Deep Discoverer; 2015 AUV Sentry plume mapping |
| Perseverance | active, confirmed | back-arc spreading center | Mariana Trough | 15.4802 | 144.5077 | 3935 | 2016 ROV SuBastian; 2015 AUV Sentry plume mapping |
| 13 N Ridge Site | active, confirmed | back-arc spreading center | Mariana Trough | 13.0987 | 143.6886 | 3036 | 2000 deep-tow camera (later, same year - ROV Kaiko) |
| Von Damm | active, confirmed | mid-ocean ridge | Mid-Cayman Rise | 18.3777 | -81.7972 | 2372 | 2010 AUV Autosub6000 and HyBIS TVG; 2009 plume only |
| Beebe | active, confirmed | mid-ocean ridge | Mid-Cayman Rise | 18.5466 | -81.7182 | 4957 | 2010 AUV Autosub6000 and HyBIS TVG; 2009 plume only |
| Loki's Castle | active, confirmed | mid-ocean ridge | Mohns Ridge | 73.5500 | 8.1500 | 2400 | 2008 ROV Bathysaurus |
| Aegir | active, confirmed | mid-ocean ridge | Mohns Ridge | 72.3440 | 1.5550 | 2600 | 2015 ROV Ægir 6000; 2013 plume only; 2015 AUV |
| Soria Moria | active, confirmed | mid-ocean ridge | Mohns Ridge | 71.2593 | -5.8146 | 750 | 2005 ROV BIODEEP-05 cruise |
| Troll Wall | active, confirmed | mid-ocean ridge | Mohns Ridge | 71.2833 | -5.7667 | 550 | 2005 ROV BIODEEP-05 cruise |
| EPR, 9 50'N | active, confirmed | mid-ocean ridge | N EPR | 9.8300 | -104.2900 | 2520 | 1989 Argo I towed video |
| EPR, 9 17'N | active, confirmed | mid-ocean ridge | N EPR | 9.2800 | -104.2166 | 2585 | 1989 Argo I towed video |
| Teotihuacan | active, confirmed | mid-ocean ridge | N EPR | 15.7333 | -105.4333 | 2300 | 2010 submersible Nautile; 1997 plume only |
| EPR, 13 N | active, confirmed | mid-ocean ridge | N EPR | 12.8333 | -103.9500 | 2630 | 1982 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity |
| EPR, 9 30'N | active, confirmed | mid-ocean ridge | N EPR | 9.5167 | -104.2414 | 2580 | 1989 Argo I towed video |
| Medusa | active, confirmed | mid-ocean ridge | N EPR | 9.1404 | -104.2065 | 2580 | 2007 ROV Jason II; 1991 plume only |
| EPR, 13 N, Marginal High | active, confirmed | mid-ocean ridge | N EPR | 12.7090 | -103.9160 | 2650 | 1984 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity |
| EPR, 10 02'N | active, confirmed | mid-ocean ridge | N EPR | 10.0330 | -104.3300 | 2560 | 1992 submersible Alvin |
| EPR, 11 17'N | active, confirmed | mid-ocean ridge | N EPR | 11.2833 | -103.7583 | 2560 | 1984 Angus camera (or 1985 Argo video) tow with temperature |
| Mounds and Microbes | active, confirmed | mid-ocean ridge | N EPR | 9.4500 | -104.5383 | 2950 | 2002 submersible Alvin; 1994 submersible Alvin did not confirm activity |
| EPR, 11 42'N | active, confirmed | mid-ocean ridge | N EPR | 11.7000 | -103.8500 | 2580 | 1984 Angus camera (or 1985 Argo video) tow with temperature |
| EPR, 11 24'N | active, confirmed | mid-ocean ridge | N EPR | 11.4000 | -103.7800 | 2580 | 1990 submersible Alvin; 1988 submersible Alvin dive #1994 (need reference to confirm activity) |
| AHA Field | active, confirmed | mid-ocean ridge | N EPR | 1.7333 | -102.2830 | 2850 | 2000 towed imaging ARGO-II |
| Feather Duster | active, confirmed | mid-ocean ridge | N EPR | 10.9267 | -103.6767 | 2520 | 1984 towed camera and submersible Alvin |
| EPR, 3.9 N offset | active, confirmed | mid-ocean ridge | N EPR | 3.9170 | -102.2330 | 2875 | 1989 or earlier Deep Tow photographs (cruise RIFTS or PAPATUA) |
| EPR, 10 44.6'N | active, confirmed | mid-ocean ridge | N EPR | 10.7433 | -103.6500 | 2580 | 1985 Argo video tow with temperature |
| EPR, 8 38'N | active, confirmed | mid-ocean ridge | N EPR | 8.6333 | -104.2000 | 2550 | 2003 submersible Alvin; 1989 dredge only; 2002 plume only |
| EPR, 9 33'N | active, confirmed | mid-ocean ridge | N EPR | 9.5583 | -104.2500 | 2574 | 1989 Argo I towed video; 1991 submersible Alvin |
| EPR, 21 N | active, confirmed | mid-ocean ridge | N EPR | 20.8333 | -109.0833 | 2600 | 1979 submersible Alvin; 1978 submersible Cyana discovered mineral deposits only |
| EPR, 9 40'N | active, confirmed | mid-ocean ridge | N EPR | 9.6500 | -104.2600 | 2572 | 1989 Argo I towed video; 1991 submersible Alvin |
| Red Seamount | active, confirmed | mid-ocean ridge | N EPR | 20.8033 | -109.3783 | 2000 | 1982 submersible Alvin |
| EPR, 9 47'N | active, confirmed | mid-ocean ridge | N EPR | 9.7750 | -104.2802 | 2560 | 1989 Argo I towed video; 1991 submersible Alvin |
| Broken Spur | active, confirmed | mid-ocean ridge | N MAR | 29.1700 | -43.1717 | 3100 | 1993 submersible Alvin; earlier in 1993, water column anomalies and towed camera did not confirm activity |
| Bubbylon | active, confirmed | mid-ocean ridge | N MAR | 37.8000 | -31.5333 | 1000 | 2010 ROV MARUM-QUEST, same cruise as plume discovered by multibeam echosounder |
| Luso | active, confirmed | mid-ocean ridge | N MAR | 38.9833 | -29.8833 | 570 | 2018 ROV Luso |
| TAG | active, confirmed | mid-ocean ridge | N MAR | 26.1367 | -44.8267 | 3670 | 1985 towed camera and temperature anomaly; 1986 submersible Alvin |
| Snake Pit | active, confirmed | mid-ocean ridge | N MAR | 23.3683 | -44.9500 | 3500 | 1985 real-time TV and imaging sonar; earlier in 1985 seafloor photographs did not confirm activity |
| Moytirra | active, confirmed | mid-ocean ridge | N MAR | 45.4833 | -27.8500 | 2900 | 2011 ROV Holland 1; 2008 plume only MAPRs, ROV Isis buoyant plume, but no visual confirmation |
| Logatchev-1 | active, confirmed | mid-ocean ridge | N MAR | 14.7520 | -44.9785 | 3050 | 1993-1994 TV grab and towed photo system; 1995 submersible Mir followed by submersible Nautile |
| Semyenov-2 | active, confirmed | mid-ocean ridge | N MAR | 13.5137 | -44.9630 | 2440 | 2009 TV grab and photo-TV profiling; 2007 deposits only |
| Evan | active, confirmed | mid-ocean ridge | N MAR | 37.2667 | -32.2833 | 1775 | 2006 submersible Nautile |
| Logatchev-2 | active, confirmed | mid-ocean ridge | N MAR | 14.7200 | -44.9380 | 2760 | 2007 ROV VICTOR 6000; 1993-1994 TV grab and towed photo system did not confirm activity; 1996-1998 video imaging and sampling did not confirm activity |
| Irinovskoye | active, confirmed | mid-ocean ridge | N MAR | 13.3327 | -44.9099 | 3000 | 2013 ROV Victor6000; 2007 dredge only; 2009 or 2011 did not confirm |
| Lucky Strike | active, confirmed | mid-ocean ridge | N MAR | 37.2933 | -32.2733 | 1740 | 1993 submersible Alvin; 1992 dredge and plume only |
| Ashadze-2 | active, confirmed | mid-ocean ridge | N MAR | 12.9917 | -44.9067 | 3300 | 2007 ROV Victor 6000; 2005 TV profiling, plume, and dredge did not confirm activity |
| Ashadze-1 | active, confirmed | mid-ocean ridge | N MAR | 12.9733 | -44.8633 | 4200 | 2003 TV profiling; 2007 ROV Victor 6000 |
| Menez Gwen | active, confirmed | mid-ocean ridge | N MAR | 37.8417 | -31.5250 | 865 | 1994 submersible Nautile |
| Menez Hom | active, confirmed | mid-ocean ridge | N MAR | 37.1500 | -32.4333 | 1802 | 2002 ROV Victor 6000 |
| Rainbow | active, confirmed | mid-ocean ridge | N MAR | 36.2300 | -33.9020 | 2320 | 1997 submersible Nautile |
| Saldanha | active, confirmed | mid-ocean ridge | N MAR | 36.5667 | -33.4333 | 2300 | 1998 submersible Nautile |
| Lost City | active, confirmed | mid-ocean ridge | N MAR | 30.1250 | -42.1183 | 800 | 2000 towed video ARGO-II and submersible Alvin |
| Stanton Seamount | active, confirmed | arc volcano | New Hebrides Arc | -10.8670 | 166.7000 | 800 | 2002 towed video |
| Epi Caldera | active, confirmed | arc volcano | New Hebrides Arc | -16.6870 | 168.4000 | 320 | 2013 ROV Kiel6000; 1974 sediment samples only; 2001 plume and camera tow (did not confirm activity) |
| Starfish Seamount, Tinakula | active, confirmed | back-arc spreading center | New Hebrides back-arc | -12.2028 | 167.6139 | 1204 | 2011 commercial ROV; 1989 plume only; 1989 towed camera survey did not confirm activity; 2002 plume and dredge only |
| Temakons | active, confirmed | back-arc spreading center | New Hebrides back-arc | -17.5667 | 169.1000 | 1400 | 1994 towed camera with temperature |
| Nifonea Ridge | active, confirmed | back-arc spreading center | New Hebrides back-arc | -18.1330 | 169.5170 | 1900 | 2001 towed video; 2013 ROV Kiel 6000 black smokers |
| Sonne 99 | active, confirmed | back-arc spreading center | North Fiji Basin | -16.9500 | 173.9167 | 1980 | 1995 deep tow video and TV-grab |
| Mussel Valley | active, confirmed | back-arc spreading center | North Fiji Basin | -18.8167 | 173.4833 | 2700 | 1989 submersible Nautile; 1987 plume; 1988 towed camera did not confirm activity |
| White Lady | active, confirmed | back-arc spreading center | North Fiji Basin | -16.9833 | 173.9167 | 2000 | 1988 towed camera and plume; 1989 submersible Nautile |
| SPOT, Yonaguni Knoll IV | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8490 | 122.7000 | 1385 | 2000 submersibles Shinkai 2000 and Shinkai 6500 |
| Yoron Hole | active, confirmed | back-arc spreading center | Okinawa Trough | 27.4916 | 127.5333 | 590 | 2010 ROV Hyperdolphin |
| Yokosuka | active, confirmed | back-arc spreading center | Okinawa Trough | 25.2638 | 124.3733 | 2190 | 2016 ROV Kaiko; 2014 plume only |
| Minami-Ensei Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 28.3917 | 127.6417 | 740 | 1988 deep tow TV surveys followed by submersible Shinkai 2000; 1986 dredged Calyptogena shells |
| Higashi-Ensei | active, confirmed | back-arc spreading center | Okinawa Trough | 28.4393 | 128.1724 | 1220 | 2016 ROV Kaiko dives 723 and 724 |
| Tarama Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 25.0916 | 124.5416 | 1990 | 2009 ROV HyperDolphin |
| North Knoll, Iheya Ridge | active, confirmed | back-arc spreading center | Okinawa Trough | 27.7908 | 126.8966 | 1100 | 1995 deep tow survey |
| Futagoyama | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8674 | 123.3081 | 1270 | 2016 ROV Kaiko dive 717 |
| Natsushima 84-1 Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5750 | 127.1417 | 1600 | 1986 submersible Shinkai 2000 |
| Irabu Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 25.2300 | 124.8800 | 1850 | 2000 submersible Shinkai 6500; 1986 seafloor photos did not confirm activity |
| Higa | active, confirmed | back-arc spreading center | Okinawa Trough | 26.5550 | 126.2233 | 1485 | 2015 ROV Kaiko |
| Izena Cauldron | active, confirmed | back-arc spreading center | Okinawa Trough | 27.2667 | 127.0833 | 1610 | 1988 submersible Shinkai 2000 |
| Sakai | active, confirmed | back-arc spreading center | Okinawa Trough | 27.5481 | 126.9895 | 1600 | 1988 submersible Shinkai 2000; 1987 plume only |
| Kueishan Island, offshore | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 122.0000 | 1200 | 2008 or earlier |
| SPOT, Hatoma Knoll | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8550 | 123.8410 | 1520 | 1999 submersible Shinkai 2000 |
| Kueishan Island | active, confirmed | back-arc spreading center | Okinawa Trough | 24.8333 | 121.9500 | 30 | 1999, likely by SCUBA |
| EPR, 37 40'S Axial Dome | active, confirmed | mid-ocean ridge | Pacific-Antarctic Ridge | -37.6667 | -110.8667 | 2240 | 1997 video survey L'Atalante (do not know if activity confirmed); 1995 TV survey did not confirm activity; 2001 towed video and TV-grab definitely confirmed |
| EPR, 37 48'S Axial Dome | active, confirmed | mid-ocean ridge | Pacific-Antarctic Ridge | -37.8000 | -110.9167 | 2200 | 2001 towed video and TV-grab |
| Steinaholl Vent Field | active, confirmed | mid-ocean ridge | Reykjanes Ridge | 63.1000 | -24.5333 | 350 | 1990 plume, echosounding, and towed video; 1993 plume only (included echosounding for more precise location) |
| Nagahama Bay, Iwo-dake Volcano | active, confirmed | arc volcano | Ryukyu Arc | 30.7500 | 130.3330 | 26 | 1994 or earlier intertidal; 2008 or earlier SCUBA subtidal |
| Kagoshima Bay | active, confirmed | arc volcano | Ryukyu Arc | 31.6583 | 130.8000 | 200 | 1993 towed TV system (Haorimushi site); 2007 ROV Hyper-dolphin (Tagiri site) |
| Daisan-Kume Knoll | active, confirmed | arc volcano | Ryukyu Arc | 26.3020 | 126.4125 | 1370 | 2015 ROV Kaiko; 2014 ROV Hyper Dolphin 3000 Dive 1761 may have confirmed; 2014 AUV temperature anomaly |
| Akuseki-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.4610 | 129.5970 | 5 | 1993 or earlier, likely by SCUBA |
| Kodakara-jima | active, confirmed | arc volcano | Ryukyu Arc | 29.2166 | 129.3333 | 10 | 1993 or earlier, likely by SCUBA |
| Taketomi Thermal Area | active, confirmed | arc volcano | Ryukyu Arc | 24.3483 | 124.1017 | 23 | 1987 or earlier, likely by SCUBA |
| Stealth | active, confirmed | mid-ocean ridge | S EPR | -17.6167 | -113.2330 | 2600 | 1996 Argo II towed video; 1993 plume only; 1998 submersible Alvin |
| EPR, 23 30'S | active, confirmed | mid-ocean ridge | S EPR | -23.5333 | -115.5667 | 2600 | 1987 or earlier [need to check Marchig & Gundlach (1987)]; 2005 submersible Alvin |
| Rehu-Marka | active, confirmed | mid-ocean ridge | S EPR | -17.4333 | -113.2000 | 2590 | 1993 submersible Nautile; 1984 submersible Cyana - Auzende et al. (1996) says that no active black smokers were discovered but Krasnov et al. (1997) says one black smoker observed |
| Pito Seamount | active, confirmed | mid-ocean ridge | S EPR | -23.3275 | -111.6402 | 2270 | 1993 submersible Nautile |
| EPR, 18 15'S | active, confirmed | mid-ocean ridge | S EPR | -18.2500 | -113.3500 | 2680 | 1993 submersible Nautile |
| Rapa Nui | active, confirmed | mid-ocean ridge | S EPR | -21.5620 | -114.3000 | 2845 | 1999 submersible Alvin; 1987-1988 deposits only |
| EPR, 1.4 S, off-axis | active, confirmed | mid-ocean ridge | S EPR | -1.3690 | -102.4560 | 3000 | 2008 towed video |
| EPR, 18 10'S | active, confirmed | mid-ocean ridge | S EPR | -18.1700 | -113.3440 | 2700 | 1993 submersible Nautile; 1983 temperature and light attenuation anomalies |
| Saguaro Field | active, confirmed | mid-ocean ridge | S EPR | -31.8500 | -112.0333 | 2330 | 1999 submersible Alvin; 1998 plume only |
| EPR, 23 50'S | active, confirmed | mid-ocean ridge | S EPR | -23.8233 | -115.4558 | 2650 | 2005 submersible Alvin; 1990 or earlier towed TV camera did not confirm activity |
| EPR, 2 S | active, confirmed | mid-ocean ridge | S EPR | -2.2200 | -102.6550 | 2900 | 2008 towed video and AUV ABE |
| EPR, 18 26'S | active, confirmed | mid-ocean ridge | S EPR | -18.4333 | -113.3833 | 2650 | 1993 submersible Nautile; 1983 seafloor photos, temperature anomalies, and deposits did not confirm activity; 1984 submersible Cyana observed only inactive sites; 1985/86 or 1989 TV grab (need to check references to confirm activity) |
| EPR, 26 10'S | active, confirmed | mid-ocean ridge | S EPR | -26.2050 | -112.6133 | 2600 | 1987 or earlier [need to check Marchig & Gundlach (1987)]; 2005 submersible Alvin did not observe active vents |
| EPR, 11 18'S | active, confirmed | mid-ocean ridge | S EPR | -11.3000 | -110.5300 | 2650 | 1985/86 or 1989 TV grab (need to check references to confirm activity); 1998 submersible Alvin |
| EPR, 18 32'S | active, confirmed | mid-ocean ridge | S EPR | -18.5550 | -113.4160 | 2647 | 1993 submersible Nautile |
| EPR, 26.5 S | active, confirmed | mid-ocean ridge | S EPR | -26.4833 | -112.6250 | 2064 | 1993 submersible Nautile (or earlier) |
| EPR, 7 25'S | active, confirmed | mid-ocean ridge | S EPR | -7.4167 | -107.8000 | 2750 | 1985/86 or 1989 TV grab (need to check references to confirm activity); 1998 submersible Alvin |
| EPR, 20 06'S | active, confirmed | mid-ocean ridge | S EPR | -20.1000 | -113.7080 | 3000 | 1981 Angus camera tow; 1984 submersible Cyana |
| Nolan's Nook | active, confirmed | mid-ocean ridge | S EPR | -31.1500 | -111.9167 | 2330 | 1999 submersible Alvin; 1998 plume only |
| EPR, 14 S | active, confirmed | mid-ocean ridge | S EPR | -13.9667 | -112.4667 | 2635 | 1985/86 or 1989 TV grab (need to check references to confirm activity); 1993 plume only; 1994 submersible Shinkai 6500 |
| Animal Farm | active, confirmed | mid-ocean ridge | S EPR | -18.6080 | -113.4000 | 2675 | 1993 submersible Nautile |
| EPR, 17 12'S | active, confirmed | mid-ocean ridge | S EPR | -17.2000 | -113.1500 | 2590 | 1993 submersible Nautile |
| EPR, Ridge 3, 20 40'S | active, confirmed | mid-ocean ridge | S EPR | -20.3333 | -113.6792 | 3050 | 1983 Deep Tow camera |
| EPR, 17 34'S | active, confirmed | mid-ocean ridge | S EPR | -17.5667 | -113.2333 | 2600 | 1994 submersible Shinkai 6500; 1996 Argo II towed video |
| EPR, 21 25'S | active, confirmed | mid-ocean ridge | S EPR | -21.4333 | -114.2917 | 2850 | 1984 submersible Cyana; 1983 deposits only |
| EPR, 17 44'S | active, confirmed | mid-ocean ridge | S EPR | -17.7330 | -113.2660 | 2622 | 1998 submersible Alvin; 1993 plume only; not explored by Nautile in 1993 or Shinkai 6500 in 1994 |
| EPR, Ridge 1, 20 40'S | active, confirmed | mid-ocean ridge | S EPR | -20.8333 | -114.1667 | 3000 | 1983 Deep Tow camera |
| MAR, 4 48'S | active, confirmed | mid-ocean ridge | S MAR | -4.8058 | -12.3742 | 3050 | 2005 AUV ABE (cruise CD169 ) followed by ROV Quest (cruise M64/1) |
| Nibelungen | active, confirmed | mid-ocean ridge | S MAR | -8.3000 | -13.5200 | 2900 | 2006 AUV ABE followed by ROV Quest; 2004 plume only |
| Deyin-1 | active, confirmed | mid-ocean ridge | S MAR | -15.1666 | -13.3558 | 2850 | 2012 TV-grab; 2011 deposits only; 2013 plume only |
| Zouyu ridge | active, confirmed | mid-ocean ridge | S MAR | -13.2800 | -14.4100 | 2315 | 2009 towed video |
| Lilliput | active, confirmed | mid-ocean ridge | S MAR | -9.5500 | -13.1800 | 1500 | 2005 ROV Quest |
| Kawio Barat | active, confirmed | arc volcano | Sangihe Arc | 4.8133 | 125.0816 | 1890 | 2003 towed video, CTD/transmissometer, and dredge |
| Lembeh Strait | active, confirmed | arc volcano | Sangihe Arc | 1.8000 | 125.2000 | 3 | NotProvided |
| Banua Wuhu submarine volcano | active, confirmed | arc volcano | Sangihe Arc | 3.1380 | 125.4910 | 10 | 1996 or earlier, likely by SCUBA |
| Grover Seamount | active, confirmed | arc volcano | Solomons Arc | -10.4667 | 164.2500 | 600 | 2002 towed video |
| Adventure Caldera | active, confirmed | arc volcano | South Sandwich Arc | -59.7210 | -27.8571 | 520 | 2011 SHRIMP towed camera system; 2010 high resolution bathymetry only |
| Kemp Caldera | active, confirmed | arc volcano | South Sandwich Arc | -59.7000 | -28.3166 | 1420 | 2010 ROV Isis; 2009 plume only |
| Tiancheng | active, confirmed | mid-ocean ridge | SWIR | -27.9670 | 63.5500 | 3600 | 2014 HOV Jiaolong; 1997 plume only; 2009 DY115-20 Leg 7 plume and deposits; |
| Longqi | active, confirmed | mid-ocean ridge | SWIR | -37.7838 | 49.6494 | 2785 | 2007 towed video sled followed by AUV ABE; 2005 plume only |
| Luise Harbor, Lihir Island | active, confirmed | arc volcano | Tabar-Feni Arc | -3.1167 | 152.6500 | 30 | 1990 or earlier |
| Tutum Bay, Ambitle Island | active, confirmed | arc volcano | Tabar-Feni Arc | -4.0833 | 153.5500 | 10 | 1996 or earlier, likely by SCUBA |
| White Island | active, confirmed | back-arc spreading center | Taupo Volcanic Zone | -37.5191 | 177.1953 | 30 | 1989 or earlier, likely SCUBA |
| Calypso Vents | active, confirmed | back-arc spreading center | Taupo Volcanic Zone | -37.6800 | 177.1170 | 200 | 1989 submersible Soucoup |
| Whale Island | active, confirmed | back-arc spreading center | Taupo Volcanic Zone | -37.8600 | 176.9800 | 42 | 1990 or earlier, likely by SCUBA |
| Don Joao de Castro Bank | active, confirmed | mid-ocean ridge | Terceira Rift | 38.2300 | -26.6300 | 45 | 1995 SCUBA |
| Ribeira Quente | active, confirmed | mid-ocean ridge | Terceira Rift | 37.7250 | -25.3160 | 10 | 1986 or earlier, likely from shore or by SCUBA |
| West Mata submarine volcano | active, confirmed | arc volcano | Tonga Arc | -15.0950 | -173.7500 | 1208 | 2009 ROV Jason II; 2008 eruption plume detected |
| Niua South | active, confirmed | arc volcano | Tonga Arc | -15.1650 | -173.5700 | 1180 | 2008 commercial ROV |
| Tonga Arc, Volcano 1 | active, confirmed | arc volcano | Tonga Arc | -21.1500 | -175.7500 | 210 | 2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2003 plume and dredge only |
| Niua North | active, confirmed | arc volcano | Tonga Arc | -15.0667 | -173.5667 | 1375 | 2012 ROV Quest 4000; 2008 plume only |
| Tonga Arc, Volcano 18 | active, confirmed | arc volcano | Tonga Arc | -24.5850 | -176.9170 | 1465 | 2011 ROV MAGNUM; 2003 plume and dredge only |
| Tonga Arc, Volcano 19 | active, confirmed | arc volcano | Tonga Arc | -24.8000 | -177.0167 | 970 | 2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2003 plume and dredge only |
| Monowai Caldera | active, confirmed | arc volcano | Tonga Arc | -25.8000 | -177.1500 | 1165 | 2005 with submersibles PISCES IV and PISCES V and ROV RCV-150; 2004 plume only |
| Marsili | active, confirmed | back-arc spreading center | Tyrrhenian Back-Arc Basin, Tyrrhenian Sea | 39.2600 | 14.3780 | 800 | 2006 ROV Cherokee; 1989 shimmering water but did not confirm activity |
| Franklin Seamount | active, confirmed | back-arc spreading center | Woodlark Basin | -9.9083 | 151.8300 | 2366 | 1990 submersible Mir |
