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Fiskeri- og Søfartsmuseet, Esbjerg
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Ophioglypha robusta. Broken young one from crab ledge, aboral view (31), oral view (32); Amphipholis squamata (adult), aboral view (33), oral view (34); Gorgonocephalus agassizii, aboral view (35), oral view (36).
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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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Description: 2 species of ophiuroid (brittle star) on the seabed at Asterix. The smaller species is likely Ophiocten gracilis, (several specimens collected at the site were identified as O. gracilis) while the larger organism is probably Ophiopleura borealis (although no specimen was collected) Item Type: Video Title: Ophiocten gracilis Copyright: SERPENT Project Species: Ophiocten gracilis Behaviour: These ophiuroids are very common and quite active, contributing to bioturbation as the arms are moved around Site: Atlantic -- Norwegian -- Asterix Site Description: Seafloor Depth (m): 1350 Latitude: 5 deg 17' 25" N Longitude: 67 deg 01' 02" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Transocean Leader Project Partners: StatoilHydro, Oceaneering, Transocean ROV: Magnum 018 Deposited By: Dr Andrew Gates Deposited On: 17 November 2009
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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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Description: Seabed image containing Sea pen Pennatula phosphorea and brittle star Ophiura albida and a fish sp. gobi Item Type: Image Title: Pennatula phosphorea Species: Pennatula phosphorea, Ophiura albida Site: Atlantic -- North Sea -- West of Shetland -- LagganNorth Sea -- West of Shetland -- Laggan Site Description: Seafloor Depth (m): 96 Latitude: 60 deg 30' 32" N Longitude: 0 deg 42' 27" E Countries: UK -- West of Shetland Habitat: Benthic Rig: Fugro Mercator Project Partners: Total ROV: Seaeye Tiger Deposited By: Miss Moira MacLean Deposited On: 29 October 2010
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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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A closeup of the aboral side of the central disk. Note that the radial shields (paired large central disk plates at the base of each arm) are longer than wide, and that their proximal ends are separated by a wedge-shaped group of scales while their distal ends are separated by an extension of an arm plate.
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The arms of this species extend from slots in the central disk, as seen here. The plates at the edge of the slot are lined an "arm comb" of bristles which touch the edges of the arm. In this species the bristles of the arm comb are unusually flat and squared off, and the edge of each bristle is in contact with the edge of the next bristle so it is hard to see that the arm comb is distinct from the rest of the plate. In this photo the outline of several of the bristles of the comb can be seen along the edge of the upper plate. Note also that the aboral arm plates are wedge-shaped with the widest portion of each plate distal to the central disk.
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This view of the underside of the central disk shows the white coloration on the underside. Also note that the oral shields (large plates seen between the bases of the arms) are widest near the middle rather than near the outer edges.
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Ophiura luetkenii found subtidally near Northwest Island by Haruko Ito. Ray length 3 cm. (Photo by: Dave Cowles, July 2012)
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Large sand brittle star; Slangster.
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