Alvin 35 mm photograph taken in 1991 of the Mussel Bed area. Photograph showing the Mussel Bed site just after or during the 1991 eruption with the new, (black) lava flow in the foreground of the photo lapping onto older lobate flows covered with mussels. Distance across bottom of photo is ~4 m.
Species (common):
Year: 1991
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera
Feature: EPR:9N:MusselBed
Investigator: Vicki Ferrini
Expedition: A125-24
Chief Scientist: Daniel Fornari
Species:

Argo electronic still camera image taken in 1989 [Haymon et al., 1991] of the area around Mussel Bed. Scale across bottom of image is ~2 m.
Species (common):
Year: 1989
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera
Feature: EPR:9N:MusselBed
Investigator: Vicki Ferrini
Expedition: VNTR03WT
Chief Scientist: Rachel Haymon
Species:

Base of hydrothermal vent structure at East Pacific Rise. Tube worms (Riftia pachyptila) are evident in the warm waters at the base of the structure. These organisms are specially adapted for the extreme conditions (pressure, temperature, chemical) found in the environment seen here.
Species (common):
Year: 2002
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:9_50
Investigator: Daniel Fornari
Expedition: AT07-12
Chief Scientist: Hans Schouten
Species:

Diverse animal communities like these are common at areas of diffuse hydrothermal flow on the East Pacific Rise (EPR). The shimmering water in the foreground indicates a slightly more focused area of hydrothermal fluid flow.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:MusselBed
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species: Riftia pachyptila (Tube worm) Bathymodiolus thermophilus Munidopsis subsquamosa

The presence of these animal communities indicates that warm water is being released from the seafloor. 2004 Photograph:Digital Photograph Camera:Digital EPR:9N Vicki Ferrini

The base (and marker) of a well-studied black smoker, named P-vent, within the Axial Summit Trough (AST) of the East Pacific Rise (EPR). The orange/yellow colors in this image suggest the presence of metal oxide similar to rust. The white material may be a film-like microbial community.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:P
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

P-vent is the name of this well-studied black smoker (high-temperature hydrothemal vent) located just east of the primary eruptive fissure within the Axial Summit Trough (AST) of the East Pacific Rise (EPR)
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:P
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

The hydrothermal vent complex Bio9' (pronounced "Bio-9-prime") has several spires, only some of which are emitting hot hydrothermal fluids.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:Bio9'
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

A hydrothermal vent structure, named Bio9'' (pronounced, "Bio-9-double prime"), located in the Axial Summit Trough (AST) of the East Pacific Rise (EPR). The device inserted into the black smoker (383 degrees Celcius) is a temperature data logger (HOBO) that used to record vent fluid temperatures over a period of time, up to several years.
Species (common):
Year: 2004
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: EPR:9N:Bio9''
Investigator: Vicki Ferrini
Expedition: AT11-20
Chief Scientist: Marvin Lilley
Species:

A hydrothermal vent structure, with black smoke emanating as part of a focused plume of hot hydrothermal fluid. An instrument has been placed at the base of the venting source to monitor characteristics of the hot fluid. The cylinders in the lower left portion of this image are titanium bottles (Major Samplers) that are used to bring samples of hydrothermal fluids to the surface for laboratory analyses. The platform to which the fluid samplers are attached is the sample basket on the Deep Submergence Vehicle (DSV) Alvin.