Image Archive

A deep-sea octopus (possibly Muusoctopus?) seen at Slope Base during the Shallow Profiler EOM anchor inspection. Two anemones are attached to the nearby cable. Credit: NSF-OOI/UW/CSSF, Dive R2256, V22

A deep-sea octopus (possibly Muusoctopus?) seen at Slope Base during the Shallow Profiler EOM anchor inspection. Photo credit: NSF-OOI/UW/CSSF, Dive R2256, V22

An echinothuriid sea urchin at Slope Base during the 2022 recovery of the MJ01A junction box. Credit: UW/NSF-OOI/CSSF, ROPOS Dive R2250, V22.

The bottom pressure and tilt unit (BOTPT) measures the inflation and deflation of the seafloor at the summit of Axial Seamount using a precision pressure sensor and tilt meter that enable detection of the seafloor’s rise, fall, and deformation as molten rock moves in and out of the underlying magma chamber. Credit: NSF-OOI/UW/CSSF, Dive R2249, V22

A deep-sea purple octopus (Graneledone boreopacifica) seen during a survey on the Eastern flank of Axial Caldera. Credit: NSF-OOI/UW/CSSF, Dive R2243, V22

A rubbly, jumbled sheet flow in the ASHES hydrothermal field at ~ 1500 m water depth, summit of Axial Seamount Credit: UW/NSF-OOI/CSSF; ROPOS Dive R2240, V22.

Hundreds of limpets are intermixed with beautiful brown anemones, scale worms, scarce tubeworms, and filamentous bacteria in a diffuse flow site at ASHES hydrothermal field. Credit: UW/NSF-OOI/CSSF; ROPOS dive R2240; V22.

A CTD, funded by and NSF-award to Dr. William Chadwick (OSU) is installed on a thick sheet flow at the Central Caldera site at the summit of Axial Seamount. A suite of CTD's is installed on the array to examine the hypothesis that subsurface brines are ejected into the water column during eruptions (e.g. in 2015). Credit: W. Chadwick, OSU; UW/NSF-OOI/CSSF; ROPOS Dive R2212, V22.

A docking station is installed at the base of a Deep Profiler Mooring off teh R/V Thompson in 2018. Credit: M/ Elend, University of Washington.

A beautiful young chimney composed of anhydrite and fine-grained metal sulfide minerals sprouts from the side of the Escargot edifice, venting ~ 300°C fluids. A temperature - chlorinity instrument is installed in the orifice, with the growing chimney enclosing it. Credit: UW/NSF-OOI/WHOI; V19.

A beautiful anydrite chimney sprouts from the base of the Castle edifice in the International District Hydrothermal Field at the summit of Axial Seamount. Credit: UW/NSF-OOI/CSSF; ROPOS Dive R2246; V22.

A frozen ball of lava with a bread crust rind at the summit of Axial Seamount. Small brittle stars call these rocks home. Credit: UW/NSF-OOI/CSSF; ROPOS Dive R2246; V22.

The digital still camera visited during the RCA 2022 expedition is covered in filamentous bacteria, thriving on diffuse flowing fluids. The camera is at the Tiny Towers vent site in the International District Hydrothermal Field. Credit: UW/NSF-OOI/CSSF; ROPOS Dive R2246, V22.

Small bubbles are emitted from the anhydrite - sulfide chimney 'Diva' in the International District Hydrothermal Field. The vent fluids are extremely enriched in carbon dioxide. Credit: UW/NSF-OOI/CSSF; ROPOS Dive R2210; V22.

This map shows the location of Regional Cabled Array infrastructure at the Slope Base site in 2022. Credit: M. Elend, University of Washington.

Infrastructure for the Regional Cabled Array is shown on top of a bathymetric map of Southern Hydrate Ridge in 2022. Credit: M. Elend, University of Washington.

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Looking down on a galatheid crab sitting on the rope attached to a marker next to the anchor of the Slope Base profiler mooring in 2900 meters (~9500 feet) of water. A number of venus flytrap anemones are also attached to the hard surfaces here. Photo credit: NSF-OOI/UW/CSSF, Dive R2258, V22

This triangular object is a 3D temperature array: 4 stacked arrays with 24 independent temperature measurement points, providing a three-dimensional distribution of temperature flow across the seafloor at ASHES vent field on Axial Seamount. Credit: NSF-OOI/UW/CSSF, Dive R2249, V22

The HD video camera records changes in the Mushroom hydrothermal vent in the ASHES vent field on Axial Seamount. Credit: NSF-OOI/UW/CSSF, Dive R2249, V22

A blue shark investigating the deep profiler recovery frame attached to the front of ROPOS at the Oregon Offshore site. Credit: NSF-OOI/UW/CSSF, Dive R2229, V22

Looking down at the HD video camera, which records changes in the Mushroom hydrothermal vent in the ASHES vent field on Axial Seamount. The COVIS sonar system can be seen in the background. Credit: NSF-OOI/UW/CSSF, Dive R2249, V22

A temperature sensor sticking out of a hydrothermal vent chimney at ASHES vent field on Axial Seamount. These record temperature changes in the superheated vent fluid. Credit: NSF-OOI/UW/CSSF, Dive R2249, V22

A blob sculpin rests near the Tiny Towers vents in Axial Caldera, where the fluid sampling vent cap monitors and collects hydrothermal vent fluids for the PPS (Particulate DNA Sampler), which allows collection, filtering, and preservation of microbial DNA. Credit: NSF-OOI/UW/CSSF, Dive R2246, V22

A white sea cucumber and a large number of brittle stars crawl over the basalt rock on the Western flank of Axial Caldera. Credit: NSF-OOI/UW/CSSF, Dive R2245, V22

A soft coral with polyps extended next to another with polyps retracted, clinging to the underside of a ledge on the Western flank of Axial Caldera. Credit: NSF-OOI/UW/CSSF, Dive R2245, V22

Overhead shot of a blob sculpin sitting atop a mound near the Trevi Vent in Axial Caldera. A white sea cucumber and a large number of brittle stars crawl over the basalt rock on the Western flank of Axial Caldera. Credit: NSF-OOI/UW/CSSF, Dive R2244, V22