From Wikipedia, the free encyclopedia
Marine invertebrates
Marine invertebrates
The term "marine invertebrates" is used to describe animals found in a marine environment which are invertebrates: lacking a notochord. In order to protect themselves, they may have evolved a shell or a hard exoskeleton, but this is not always the case. As on land and in the air, invertebrates make up a huge portion of all life in the sea. Invertebrate sea life includes: • Bryozoa, also known as moss animals or sea mats; • Cnidaria, such as jellyfish, sea anemones and corals; • Crustaceans, such a such as lobsters, crabs, shrimp, crayfish and barnacles; • Ctenophora, also known as comb jellies; • Polychaetes, including sea worms including flatworms, ribbon worms, annelids, Sipuncula, Echiura, Chaetognatha, and the phoronids; • Echinoderms, including sea stars, brittle stars, sea urchins, sand dollars, sea cucumbers, and crinoids; • Molluscs, including shellfish, squid, octopus; • Sponges; • Tunicates, also known as sea squirts.
See also
• Marine biology • Marine vertebrate The 49th plate from Ernst Haeckel’s Kunstformen der Natur, 1904, showing various sea anemones classified as Actiniae
References
• List of Marine Invertebrate Phyla
Retrieved from "http://en.wikipedia.org/wiki/Marine_invertebrates" Categories: Marine biology, Invertebrate stubs This page was last modified on 3 March 2009, at 14:40 (UTC). All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.) Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a U.S. registered 501(c)(3) tax-deductible nonprofit charity. Privacy policy About Wikipedia Disclaimers
1