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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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Sertularia enpressina.
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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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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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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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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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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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All Biocode files are based on field identifications to the best of the researcher’s ability at the time.
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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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2005 California Academy of Sciences
CalPhotos
The gonangia arise from the central stalk of a fernlike spray. They release sperm that fertilize retained eggs. These eggs develop into planula larvae which are released.
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2005 California Academy of Sciences
CalPhotos
Obelia colony on a blade of giant kelp, as seen beneath a cover-slip. Note the many medusa buds.
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2005 California Academy of Sciences
CalPhotos
Frond of female Plumularia colony with reproductive polyps and medusoids. From a blade of giant kelp.
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2006 California Academy of Sciences
CalPhotos
The nematocysts of this hydroid have a very potent sting; the ensuing rash can last for several days. Approach these colonies with care.
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2005 California Academy of Sciences
CalPhotos
Hydroid photographed at 17m depth.
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2005 California Academy of Sciences
CalPhotos
This view shows the tiny, extended, feeding polyps that are surrounded by defensive tentacles especially rich in nematocysts. Reproductive structures are enclosed in the swollen orange corbula. From a floating dock, Monterey Harbor.
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Ptychogena lactea Agassiz 1865
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A closeup of the colony, showing the brown perisarc on older sections and the bell-shaped hydrotheca around each hydranth.
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This species is less common around Rosario in late spring and early summer but becomes quite common by the end of summer. June 30, 2009: Many Aequorea victoria are washing up on the beach at Rosario Bay. Most of them are moribund, and have this flatworm crawling over them. The flatworm is up to 5 mm long.
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Foto Fitis, www.fotofitis.nl
Ecomare
White weed; Zeecypres.
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Ptychogena lactea Agassiz 1865
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Obelia dichotoma, about 9 cm long. (Photo by: Dave Cowles, August 2006)
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This view of the underside of a swimming individual shows the many radial canals, the many tentacles along the margin of the bell, and the small manubrium in the middle.
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Erik van Ommen
foto meduse uit http://rydberg.biology.colostate.edu/
Ecomare
Sea thread hydroid; lange zeedraad.
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Melicertum octocostatum (Sars, 1835)