David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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Juergen Freund / Sea pen octocoral (Veretillum sp) with polyps out, feeding, Misool, Raja Ampat, West Papua, Indonesia
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Jeff Rotman / Gurney's Sea Pen (Ptilosarcus gurneyi) on sea bed at night, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean
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Jeff Rotman / Gurney's Sea Pen (Ptilosarcus gurneyi) close up detail, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean
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Jeff Rotman / Gurney's Sea Pen (Ptilosarcus gurneyi) close up detail, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean
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Jeff Rotman / Gurney's Sea Pen (Ptilosarcus gurneyi) close up detail, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean
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Jeff Rotman / Gurney's Sea Pen (Ptilosarcus gurneyi) close up detail, Queen Charlotte Strait, British Columbia, Canada, North Pacific Ocean
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David Shale / Close up of Sea pen (Pennatulacea) from coral seamount, SW Indian Ridge, Indian Ocean, December 2011
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David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Detail of deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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David Shale / Deepsea Sea pen (Pennatulacea) from coral seamount, Indian Ocean, December 2011
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Georgette Douwma / Sea pen (Virgularia gustaviana) on sandy sea bed. Orange form, Rinca, Komodo National Park, Indonesia
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Georgette Douwma / Purple sea pen (Virgularia gustaviana) on sandy sea bed. Orange form, Rinca, Indonesia
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Georgette Douwma / Sea pen (Pteroeides sp) on sandy seabed, Komodo National Park, Indonesia
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Sue Daly / Close up of polyps of Gurney's / Orange sea pen (Ptilosarcus gurneyi) Pacific coast, Canada, August
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Sue Daly / Orange / Gurney's sea pen (Ptilosarcus gurneyi) Pacific coast, Canada, August
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Doug Perrine / Spiny / Piked dogfish {Squalus acanthias} with Red sea urchins {Strongylocentrotus franciscanus} and orange sea pen {Ptilosarcus gurneyi} Quadra Island off Vancouver Island, Discovery Passage, British...
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Fred Bavendam / Orange Peel Nudibranch (Tochuina tetraquetra) eating an Orange Sea Pen (Ptilosarcus gurneyi), British Columbia, Canada
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Fred Bavendam / Orange Sea Pen (Ptilosarcus gurneyi) with sea urchins, Vancouver Island, British Columbia, Canada
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Alex Mustard / Orange sea pens (Ptilosarcus gurneyi) on seabed with scuba diver in background, Browning Pass, Vancouver Island, British Columbia, Canada, Queen Charlotte Strait, Pacific Ocean.
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Shane Gross / Elegant coastal shrimp (Heptacarpus decorus) on Orange sea pen (Ptilosarcus gurneyi) in Browning Pass, British Columbia, Canada. North East Pacific Ocean. July.
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Shane Gross / Orange sea pen (Ptilosarcus gurneyi) close-up detail of stalks, branches and polyps, Vancouver Island, British Columbia, Canada, Pacific Ocean.
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David Hall / Porcelain crab (Porcellanella haigae) on Sea pen (Veretillum sp). Pantar, Alor Archipelago, Lesser Sunda Islands, Indonesia.
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David Hall / Orange sea pens (Ptilosarcus gurneyi) Browning Pass, Queen Charlotte Strait, British Columbia, Canada. September.
