-- Posted by MarinaT at 9:58 pm on Aug. 21, 2008 wats an echinoderm??? -- Posted by vballperson713 at 10:00 pm on Aug. 21, 2008 idk a worm? -- Posted by hithere at 10:07 pm on Aug. 21, 2008 wow look what i did i went to google and typed it in and the first result was http://en.wikipedia.org/wiki/Echinoderm Echinoderms (Phylum Echinodermata) are a phylum of marine animals (including sea stars) found at all ocean depths. -- Posted by VIPMeezy at 10:08 pm on Aug. 21, 2008 lol this is the very first time i've seen that word -- Posted by Jadien at 10:12 pm on Aug. 21, 2008 Sea animals, yo.