The top of a bush of skinny chemosynthetic tube worms, filamentous bacteria, and encrusting limpets at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Bushes of skinny chemosynthetic tube worms at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

A crab walks towards a giant field of chemosynthetic clams at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

A crab walks next to a crack in the seafloor covered in bacteria, tube worms, and chemosynthetic clams at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

A sea cucumber travels on a highway formed by a river of lava rock at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Yellow bacterial matter and sediment covering a basalt rockface at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Pillars of basalt hold up a partially collapsed lava bubble to form a cavern at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

An extinct hydrothermal vent chimney covered in fuzzy bacterial filaments shelters a tiny crab at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

A skinny hydrothermal vent chimney and the surrounding chemosynthetic community at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

A skinny hydrothermal vent chimney topped with a temperature probe and the surrounding chemosynthetic community at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Hydrothermal vent and surrounding chemosynthetic community at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Temperature and resistivity probe inserted into a superheated hydrothermal vent at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Rattail and instrument tripod at Axial Caldera International District Vent Field. Credit: UW/NSF-OOI/WHOI; J2-1788; V26.

Arrival back in Newport. Credit: A. Wolf, University of Washington; V26.

Avery Wolf posing with ROV Jason for the last time. Credit: J. Thirtyacre, University of Washington; V26.

A large number of Blackfooted Albatross visited the R/V Roger Revelle this morning. Credit: A. Wolf, University of Washington; V26.

A couple of sea creatures we met while cleaning off the shallow profiler. Credit: A. Wolf, University of Washington; V26.

Big red jelly captured in Jason’s brow cam. Credit: M. Talbot, University of Washington. V26.

Chalcopyrite with small anhydrite crystals clustered on temperature-resistivity probe. Credit: M. Talbot, University of Washington. V26.

Deck yoga out on the bow. Pictured from left to right: Izzie, Maddy, Avery. Credit: J. Campbell, University of Washington. V26.

The Driver’s Seat. Credit: T. Naladala, University of Washington, V26.

The Twin Turbo V16 Engines, Credit: T Naladala, University of Washington, V26.

Two dolphins swimming just of the starboard side of the bow of the R/V Revelle. Credit: J. Campbell, University of Washington, V26

Dolphin just behind the bridge, surfing in the wake. Credit: J. Campbell, University of Washington, V26.

The turbines that spin the propellor of the R/V Revelle. Credit: J. Campbell, University of Washington, V26.

The engine room inside the R/V Revelle, showing the two large diesel generators. Credit: J. Campbell, University of Washington, V26.

Jason lighting up the water at night during dive J2-1793. Credit: UW/NSF-OOI/WHOI; J2-1783, V26.