Notes on Vent Field Description:
southeastern shore of Sao Miguel Island; YouTube video posted by a diving center that indicates hydrothermal vents at Ribeira Quente, accessed 20150422: https://www.youtube.com/watch?v=EV40HDqPYCI; note there are additional intertidal vents on Sao Miguel Island, including on the north coast "Porto Formoso, characterized by the presence of shallow-water hydrothermal vents (37°49′18.8″N, 025°27′25.2″W)" (Couto et al. 2010); references for intertidal and subtidal studies in Couto, R.P., et al. (2015)
Year and How Discovered (if active, visual confirmation is listed first):
1986 or earlier, likely from shore or by SCUBA
Other References (text):
Thauer, R. and Kunow, J. (1995) Sulfate-reducing Archaea. Chapter 2 in Barton, L.L. (ed) Sulfate-reducing Bacteria, pp. 33-48.
Couto, R. P., Neto, A. I. and Rodrigues, A. S., 2010. Metal concentration and structural changes in Corallina elongata (Corallinales, Rhodophyta) from hydrothermal vents. Marine Pollution Bulletin, 60: 509-514, doi:10.1016/j.marpolbul.2009.11.014.
Couto, R.P., et al. (2015) Shallow-water hydrothermal vents in the Azores (Portugal). Revista de Gestão Costeira Integrada / Journal of Integrated Coastal Zone Management, 15(4), doi:10.5894/rgci584.