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Coral Sea, Duration 13 seconds
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Gyrophyllum Hirondellei, d'apres Studer (Hirondelle).
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Pennatulids (Pennatula sp.).
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San Bartolomeo al Mare, Liguria, Italy
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This great sea pen was drifting loose along the east side of Bare Island - looks like it was pulled out of the sediment by a storm. Texture was jelly-like
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Kampong Salabin, South East, Singapore
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Singapore, South East, Singapore
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Pteroeides sp. 4 is not the primary subject of the video clip; the primary subject is Periclimenes holthuisi (Jelly shrimp). Indo-Pacific, Duration 16 seconds
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Nice view of the filtering / feeding zooids of the sea pen
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Kampong Salabin, South East, Singapore
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Pteroeides sp. 4 is not the primary subject of the video clip; the primary subject is Periclimenes holthuisi (Jelly shrimp). Indo-Pacific, Duration 13 seconds
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Singapore, North East, Singapore
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South Pacific Ocean, Shot at night, Duration 14 seconds
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Kampong Salabin, South East, Singapore
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Coral Sea, Duration 21 seconds
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Singapore, South East, Singapore
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Coral Sea, Duration 20 seconds
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South Pacific Ocean, Shot at night, Duration 32 seconds
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South Pacific Ocean, Shot at night, Duration 13 seconds
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2013 California Academy of Sciences
CalPhotos
The sea pen, Ptilosarcus gurneyi, is a colonial cnidaria in the same class as the anemone, the anthozoa. One polyp has been modified to form the body while the fringes of the 'feather' contain numerous small feeding polyps.
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South Pacific Ocean, Shot at night, Duration 13 seconds
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South Pacific Ocean, Shot at night, Duration 42 seconds
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Another photo. Note that the polyps are arranged in flaplike rows on the plume. Photo by Dave Cowles, July 2005
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This closeup shows the individual polyps lining the rows. A small majid crab has climbed aboard, and may be nipping at the polyps, though the crab's activity did not stimulate Ptilosarcus to close.