Sulfurous vents in the geothermal area of Te Puia, Gisborne District, North Island, New Zealand, Pacific
Sulfur Vent In Poas Volcano, Costa Rica
Tara Oceans Expeditions - May 2011. Bubbles rise from underwater volcanic vents among rocks, the openings are crusted with sulfur, Roca Redonda, Galapagos, Ecuador
