Scale worms, palm worms, and limpets on Mushroom vent. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

Tube worms, palm worms, and limpets on Mushroom vent. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A diverse assortment of vent fauna surround the active chimneys on the Mushroom hydrothermal vent. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

Jason view of the 2024 HD video camera and mushroom vent. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A rattail (grenadier) fish swimming over the top of Mushroom vent, with the CAMHD below. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A rattail (grenadier) fish swimming towards the Mushroom vent, with the CAMHD below. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

The upper portion of an active hydrothermal vent and tube worms at Axial Seamount. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

The upper portion of the active hydrothermal vent Inferno and tube worms at Axial Seamount. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A temperature probe sticking out of the top of an active hydrothermal vent at Axial. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A black smoker vents superheated fluid at Axial Seamount. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

Jason approaches an active black smoker vent at Axial Seamount. Credit: UW/NSF-OOI/WHOI, J2-1707, V25.

A methane bubble plume obscuring one of our camera tripods at Southern Hydrate Ridge, surrounded by bacterial mats. Credit: UW/NSF-OOI/WHOI, J2-1719, V25.

Tiny snails climbing on the tracer tubing of the Mosquito fluid sampler at SHR. Credit: UW/NSF-OOI/WHOI, J2-1719, V25.

The OOI camera tripod at Southern Hydrate Ridge, surrounded by bacterial mats, looking at a methane bubble plume in the distance. Credit: UW/NSF-OOI/WHOI, J2-1719, V25.

VISIONS’25 and RCA team members gather on the Atlantis for a group photo at the end of Leg 1. Credit: T. Trudel, Jason Team, V25

Hagfish, rockfish, bacterial mats, and snails all congregate around a mound of authigenic carbonate at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A small rockfish facing the camera at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A hermit crab wearing a snail shell crawls across the seafloor at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A roughtail skate sits next to some rockfish and a Tanner crab at SHR. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A roughtail skate sits next to some rockfish at SHR. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A group of scavenging hagfish tearing apart a dead sablefish at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A spider crab and a small rockfish among a large number of dead bivalve shells at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A hagfish curled up in a tiny ball behind a rockfish, sitting among clam shells at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A small eelpout sits on the seafloor at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

A hagfish and a rockfish strike a pose at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

Hagfish and rockfish sitting on a carbonate outcrop at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.

Exposed gas hydrate (methane ice) in a crevice near Einstein's Grotto at Southern Hydrate Ridge. Credit: UW/NSF-OOI/WHOI, J2-1715, V25.