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There are several deep-water species of sea pens on our coast, but only one that lives commonly in shallow-water. |
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ANIMATION of snail meeting
SEA PEN
© 2010 Thomas Carefoot |
To learn about west-coast SEA PENS: select a topic from the sea-pen menu at the top of the page
OR: play the ANIMATION of the snail meeting
the SEA PEN
OR, if you want to see other animations: follow the snail on its ODYSSEY by CLICKING
on any X-marked invertebrate on the map |
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Phylum Cnidaria (lit. “nettle-bearing” G.), referring to the nematocysts possessed by all members of the phylum; includes sea anemones, corals, sea pens, gorgonians, jellyfishes, hydroids
Class Anthozoa (lit. “flower animal” G.), including sea anemones, sea pens, corals, and cup corals
Subclass Octocorallia (=Alcyonaria) (lit. “eight coral” G.), referring to 8 sets of mesenteries, and poyps bearing eight tentacles; includes mostly colonial animals such as soft corals, gorgonians, and sea pens
Order Pennatulacea (lit. “feather characterised by” L.), including sea pens and sea pansies
Order Alcyonacea (lit. “zoophyte” G.), including soft corals such as Alcyonium spp. and Cryptophyton goddardi
NOTE the west-coast soft coral commonly known as Gersemia rubiformis is apparently an undescribed specis of Alcyonium. Fautin & Hand 2007 p. 173 In, The Light and Smith manual. Intertidal invertebrates from central California to Oregon (Carlton, ed.) Univ Calif Press, Berkeley |
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