A fragile sulfide (beehive) structure sprouts in the John Casey area on the massive ~ 55ft tall El Guapo Edifice. Sulfide worms colonize the side of the actively venting chimlet. Credit: UW/NSF-OOI/NSF: V19.

Jason diving_front_porch_20190703_233304250.framegrab02

filamentous bacteria_vent cap_20190704_042445607.framegrab01

Extinct chimney deposits from stalagmite-like structures on the summit of Axial Seamount in the International District Hydrothermal Field; Credit: UW/NSF/WHOI; V19.

A nearly 1 m-tall, 1 day-old chimney springs from a venting orifice where a temperature-chlorinity probe is inserted sending real-time data to shore. Credit: UW/NSF-OOI/WHOI;V19.

The Diva vent site is hosted atop a narrow volcanic ridge in the International District Hydrothermal Field. A cabled sensor sends real-time data back to shore measuring pH-H2S- and temperature. Credit: UW/NSF-OOI/WHOI; V19.

A small anhydrite-rich deposit encrusts the pH-H2S-temperature sensor at the DIva vent site after 1-day since its installation. UW/NSF-OOI/WHOI; V19.

A 1-day old deposit of fine-grained sulfide and and anhydrite (CaSO4) encrusts the pH-H2S-Temperature sensor at Dive, sending data live from 300 miles off shore. Credit: UW/NSF-OOI/WHOI. V19.

>300°C vent fluids form flame-like structures at the summit of the ~ 55 ft tall hot spring deposit "El Guapo". Credit: UW/NSF-OOI/WHOI; V19.

Streams of super heated hydrothermal fluids issue from the summit of the hot spring deposit "El Guapo". Sulfide worms colonize warm parts of the outer walls, supported by nutrients in the fluids. Credit: UW/NSF-OOI/WHOI; V19.

Filamentous bacteria wave in the "breeze" on the side of Escargot. Credit: UW/NSF-OOI/WHOI; V18.

A small anhydrite-rich chimney rises from the side of the chimney Escargot. Credit: UW/NSF-OOI/WHOI; V19.

A small anhydrite-rich chimney rises from the side of the chimney Escargot. Credit: UW/NSF-OOI/WHOI; V19.

Screen Shot 2019-07-03 at 3.11.16 PM

An active black smoker on the hydrothermal chimney "Mushroom" is surrounded by a dense colony of beautiful tube worms. Credit: UW/NSF-OOI/CSSF

A helathy tubworm bush encases a small chimney adjacent to the Phoenix edifice in ASHES. Credit: UW/NSF-OOI/CSSF/V15.

7-1-19 Photo

APL-sm-logo

SOO-sm-logo

UW-sm-logo

NSF-sm-logo

SOO-sm-logo

UW-sm-logo

APL-sm-logo

NSF-sm-logo

The head of an instrument, built by W. Seyfried and K. Ding, which measures temperature, pH, and H2S is inserted into 309°C flow issuing from the vent called Diva. Credit: UW/NSF-OOI/WHOI; V19.

The head of an instrument that measures temperature, pH, and H2S is inserted into 302°C flow issuing from the vent called Diva. Credit: UW/NSF-OOI/WHOI; V19.