Notes on Vent Field Description:
Global Volcanism Program profile 284200, accessed 29 May 2015: "A submarine cone, named NE Anatahan, rises to within 460 m of the sea surface on the NE flank, and numerous other submarine vents are found on the NE-to-SE flanks"; first historical eruption of associated Anatahan subaerial volcano in 2003: http://oceanexplorer.noaa.gov/explorations/03fire/logs/anatahan/anatahan.html
Year and How Discovered (if active, visual confirmation is listed first):
2003 multibeam and sidescan sonar only
Discovery References (text):
(Not studied for hydrothermal activity) Chadwick, W. et al. (2005) The submarine flanks of Anatahan Volcano, commonwealth of the Northern Mariana Islands. Journal of Volcanology and Geothermal Research 146: 8-25.