Pterasteridae Perrier 1875

Description: Diplopteraster multipes on the seafloor of the Faroe-Shetland Channel. Near the Schiehallion site. Item Type: Image Title: Diplopteraster multipes Species: Diplopteraster multipes Site: Atlantic -- North Sea -- West of Shetland -- SchiehallionNorth Sea -- West of Shetland -- Schiehallion Site Description: Seafloor Depth (m): 375 Latitude: 60 deg 21' 00" N Longitude: 4 deg 04' 00" W Countries: UK -- West of Shetland Habitat: heterogeneous substratum Rig: Nordica Project Partners: Subsea 7, BP ROV: Centurion HD Deposited By: Dr Daniel Jones Deposited On: 08 December 2014

Description: Identified from specimen of individual photographed. Item Type: Image Title: Seastar Pteraster miliaris Copyright: SERPENT project Species: Pteraster militaris Behaviour: On the seafloor, possibly feeding. Site: Atlantic -- North Sea -- West of Shetland -- TornadoNorth Sea -- West of Shetland -- Tornado Site Description: Seafloor Depth (m): 1050 Latitude: 60 deg 33' 44" N Longitude: 4 deg 27' 23" W Countries: UK -- West of Shetland Habitat: benthic Rig: Stena Carron Project Partners: OMV, Oceaneering, Stena ROV: Magnum 156 Deposited By: Dr Daniel Jones Deposited On: 23 December 2009

This individual was found in the high Arctic Canada Basin at a depth of ~2500 m; collected by ROV and about 5cm in diameter.

Hexaster obscurus d'apres Perrier (Hirondelle), face ventrale.

Hymenaster pellucidus, Wyville Thomson, Ventral aspect.

Photographed at depth of 30 m on the open coast off Monterey Bay. This is a slow-moving seastar that defends itself by secreting copious amounts of mucus. Other invertebrates in this view include the seastar Dermasteria imbricata and the sea snail Cypraea spadicea.

Description: Diplopteraster multipes on the seafloor of the Faroe-Shetland Channel. Near the Schiehallion site. Item Type: Image Title: Diplopteraster multipes Species: Diplopteraster multipes Site: Atlantic -- North Sea -- West of Shetland -- SchiehallionNorth Sea -- West of Shetland -- Schiehallion Site Description: Seafloor Depth (m): 375 Latitude: 60 deg 21' 00" N Longitude: 4 deg 04' 00" W Countries: UK -- West of Shetland Habitat: heterogeneous substratum Rig: Nordica Project Partners: Subsea 7, BP ROV: Centurion HD Deposited By: Dr Daniel Jones Deposited On: 08 December 2014

Item Type: Image Title: Yellow tipped starfish Copyright: Serpent Project Species: Pteraster militaris Behaviour: Resting on seabed with brittle star and zoarcid Site: Atlantic -- North Sea -- West of Shetland -- LagganNorth Sea -- West of Shetland -- Laggan Site Description: Seafloor Depth (m): 650 Latitude: 60 deg 56' 00" N Longitude: 2 deg 53' 00" W Countries: UK -- West of Shetland Habitat: Temperate Gravel and Sand Rig: Jack Bates Laggan Project Partners: Total, Transocean, Subsea 7 ROV: Clansman 2 Deposited By: Rob Curry Deposited On: 13 March 2007

Category hierarchy: Animals | EchinodermsDescription: Cushion star on the ocean floor.Capture device: Camera: Canon EOS 30DOriginal date: 20060900Locality: Latitude: 8.537979999999999e+000; Longitude: -8.078210000000000e+001

Description: Digital still collected as part of CODEMAP Item Type: Image Title: Hymenaster Copyright: CODEMAP Species: Hymenaster Site: Atlantic -- Celtic Site Description: Seafloor Depth (m): -2671.76 Latitude: 48 deg 33' 29" N Longitude: 11 deg 07' 55" W Countries: UK -- Whittard Canyon Habitat: Submarine Canyon Rig: RRS James Cook ROV: ISIS Deposited By: Ms Katleen Robert Deposited On: 13 September 2013

Item Type: Image Title: Yellow tipped starfish Copyright: Serpent Project Species: Pteraster militaris Behaviour: Moving Site: Atlantic -- North Sea -- West of Shetland -- LagganNorth Sea -- West of Shetland -- Laggan Site Description: Seafloor Depth (m): 650 Latitude: 60 deg 56' 00" N Longitude: 2 deg 53' 00" W Countries: UK -- West of Shetland Habitat: Temperate Gravel and Sand Rig: Jack Bates Laggan Project Partners: Total, Transocean, Subsea 7 ROV: Clansman 2 Deposited By: Rob Curry Deposited On: 13 March 2007

Category hierarchy: Animals | EchinodermsDescription: Cushion star on the ocean floor.Capture device: Camera: Canon EOS 30DOriginal date: 20060900Locality: Latitude: 8.537979999999999e+000; Longitude: -8.078210000000000e+001

Item Type: Image Title: Hymenaster pellucidus Copyright: SERPENT Project Species: Hymenaster pellucidus Site: Atlantic -- Norwegian -- Edvarda Site Description: Seafloor Depth (m): 1730 Latitude: 64 deg 12' 00" N Longitude: 4 deg 00' 00" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Eirik Raude Project Partners: Statoil, Oceaneering, Ocean Rig ROV: Magnum 063 Deposited By: Dr Andrew Gates Deposited On: 18 December 2009

Description: Identified from specimen of individual photographed. Item Type: Image Title: Seastar Hymenaster pellucidus Copyright: SERPENT project Species: Hymenaster pellucidus Behaviour: On the seafloor, possibly feeding. Site: Atlantic -- North Sea -- West of Shetland -- TornadoNorth Sea -- West of Shetland -- Tornado Site Description: Seafloor Depth (m): 1050 Latitude: 60 deg 33' 44" N Longitude: 4 deg 27' 23" W Countries: UK -- West of Shetland Habitat: benthic Rig: Stena Carron Project Partners: OMV, Oceaneering, Stena ROV: Magnum 156 Deposited By: Dr Daniel Jones Deposited On: 23 December 2009

Description: Starfish Hymenaster pellucidus Item Type: Image Title: Hymenaster pellucidus Copyright: SERPENT project Species: Hymenaster pellucidus Site: Atlantic -- North Sea -- West of Shetland -- LagavulinNorth Sea -- West of Shetland -- Lagavulin Site Description: Seafloor Depth (m): 1567 Latitude: 62 deg 39' 22" N Longitude: 1 deg 07' 33" W Countries: UK -- West of Shetland Habitat: Benthic Rig: Stena Carron Project Partners: Chevron, Oceaneering ROV: Magnum Deposited By: Miss Moira MacLean Deposited On: 19 November 2010

Description: 150 mm diameter. Item Type: Image Title: Sea star (Hymenaster) Copyright: SERPENT project Species: Hymenaster sp. Behaviour: Feeding on the seabed. Site: Atlantic -- South Atlantic -- Nigeria -- Akpo fieldAtlantic -- Central Atlantic -- Nigeria -- Akpo field Site Description: Seafloor Depth (m): 1366m Latitude: 3 deg 07' 00" N Longitude: 6 deg 49' 00" E Countries: West Africa -- Nigeria Habitat: Benthic Rig: Jack Ryan Project Partners: Total, Transocean, Oceaneering ROV: Millennium 43 Deposited By: Mr R Curry Deposited On: 09 December 2009

Description: 150 mm diameter. Item Type: Image Title: Sea star (Hymenaster) Copyright: SERPENT project Species: Hymenaster sp. Behaviour: Feeding on the seabed. Site: Atlantic -- South Atlantic -- Nigeria -- Akpo fieldAtlantic -- Central Atlantic -- Nigeria -- Akpo field Site Description: Seafloor Depth (m): 1366m Latitude: 3 deg 07' 00" N Longitude: 6 deg 49' 00" E Countries: West Africa -- Nigeria Habitat: Benthic Rig: Jack Ryan Project Partners: Total, Transocean, Oceaneering ROV: Millennium 43 Deposited By: Mr R Curry Deposited On: 09 December 2009

Underside of Pteraster tesselatus. Ray length of this individual is 8 cm. Photo by Dave Cowles June 2006.

A closeup view of the tube feet along one ambulacrum. Photo by Dave Cowles, June 2006

Category hierarchy: Animals | EchinodermsDescription: Cushion star on the ocean floor.Capture device: Camera: Canon EOS 30DOriginal date: 20060900Locality: Latitude: 8.537979999999999e+000; Longitude: -8.078210000000000e+001

Another individual from subtidal Sares Head. Note the flabby-looking aboral side, caused by the extra membrane above the actual aboral side. This individual will be in danger of dying when placed back into seawater if any bubbles have gotten into the space between the outer membrane and the aboral surface, because it will cause the animal to float around the tank uncontrollably. This species is best left submerged at all times. Photo by Dave Cowles, July 2000.

In this photo, taken underwater off Northwest Island by Kirt Onthank (Feb 2006), Pteraser tesselatus is seen near hydroids and the sea cucumber Psolus chitonoides.

This colorful individual from Sares Head has a span of about 15 cm.

This closeup of the end of a ray (aboral view) shows how the tube feet at the ray tips are extended when the animal is actively moving