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ROPOS Control Room VISIONS '13, Leg 3 Photo by Ryan Cox

Upon leaving Axial Seamount, only one cable reel remains on deck. Leg 3 Visions 13. Photo by Mary Miller.

Cable draped on pillar at Axial Seamount on leg 3, Visions 13.  Photo credit: NSF-OOI/UW/CSSF

Giora Proskurowski planning a cable route on Axial Seamount during leg 3 during Visions 13. 

Samples of fresh basalt were collected from Axial Seamount's caldera floor.  When fresh, the outer surface of the rock is glassy due to the very rapid cooling and crystallization that occurs when the hot lava comes in contact with the 2oC seawater.  This glass - known as obsidian - is very sharp and crumbles easily. (Photos by Leslie Sautter)

Iron-rich basalts quickly oxidize in the O2-rich atmosphere once on deck. (Photos by Leslie Sautter)

Brendan blog photo

Sunset   Photo by Fredrik Ryden

ROPOS Control Room on R/V Thompson, VISIONS '13 Photo by Fredrik Ryden

ROPOS collects vent chimney sample

Deep Sea Skate sketch, drawn by Montgomery Taylor, a College of Charleston undergraduate student who participated on Leg 3 of VISIONS '13.

The thermistor array will be deployed at the base of the hydrothermal vent Mushroom, on the lower right side of this image on top of the yellow incubators.

The thermistor array connected to the computer and power supply.

Live Visions 13 show with John Delaney and Mary Miller from the Exploratorium in the museum's Observatory Gallery on July 30, 2013.

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axial_overview Credit: Fredrik Ryden

axial_firstpreson Credit: Fedrik Ryden

This 90 cm, ~100 lbs. chimney was collected from the base of the El Guapo sulfide chimney at the International District Hydrothermal Vent Field on Axial Seamount (ROPOS Dive 1617).  (Photo by Leslie Sautter)

Students Brendan Philip and Montgomery Taylor use all their strength to position the chimney on the examination table. VISIONS '13, Leg 3 (Photo by Leslie Sautter)

This resistivity-temperature probe was deployed in the 270°C hydrothermal vent called 'Escargot' at the summit of Axial Volcano in 2013. Resistivity is an analoge for chlorinity or "saltiness' of the hydrothermal fluids. Boiling is common in these venting environments, governing gas concentrations, metal deposition, and perhaps life. A cabled version will be installed in 2014 providing real-time 24/7 data. ROPOS dive #1618, VISIONS '13, Leg 3. Photo credit: NSF-OOI/UW/CSSF.

This relatively small (<1 m) inactive chimney recently toppled over, becoming an excellent sample for collection. (ROPOS Dive #1617, VISIONS '13, Leg 3) Photo credit:  OOI-NSF/UW/CSSF

Owen Coyle is a Biological Oceanography Ph.D. candidate at the University of WAshington.  He is participating on all four legs of the VISIONS '13 expedition and is the TA for the UW Sea-Going Research & Discovery course.

Snail-shaped top of the Escargot hydrothermal vent sulfide structure in the Internationl District area. ROPOS Dive 1617, VISIONS '13, Leg 3. Photo credit NSF-OOI/UW/CSSF

Purple protists, ciliates, on hydrothermal sulfide structure in the International District. White bacterial mats outline diffuse flow cracks. Credit: UW/NSF-OOI/CSSF; ROPOS DIve R1617; V13.