Exif Keywords: Meer, Meerestier, Meerestiere, Niedere Tiere, Wirbellose, Invertebrata, Invertebrate, Invertebrates, Korallenriff, coral reef, Cnidaria, Hohltiere, Hohltier, Koralle, Korallen, coral
Exif ImageDescription: Aglaophenia sp., Federpolyp, Aglaophenia sp.
Sea pens are colonial marine cnidarians belonging to the order Pennatulacea. There are 14 families within the order; they are thought to have a cosmopolitan distribution in tropical and temperate waters worldwide. Sea pens are grouped with the octocorals ("soft corals"), together with sea whips and sea feathers.Although named after their feather-like appearance reminiscent of antique quill pens, only sea pen species belonging to the suborder Subselliflorae live up to the comparison. Those belonging to the much larger suborder Sessiliflorae lack feathery structures and grow in club-like or radiating forms....
Source:Wikipedia
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