Hydractinia definitions

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Hydractinia

Hydractinia logo #21000 Hydractinia is a genus of athecate hydroids belonging to the family Hydractiniidae. ...
Found on http://en.wikipedia.org/wiki/Hydractinia

Hydractinia

Hydractinia logo #21003genus of marine hydrozoan polyps (phylum Cnidaria), a group of invertebrate animals with a thin tubelike body that attaches to a surface. Species of ...
Found on http://www.britannica.com/eb/a-z/h/87
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