DMOZ Internet Directory : Science : Biology : Flora_and_Fauna : Animalia : Echinodermata : Asteroidea

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The class Stelleroidea or Asteroidea are the starfish, with about 1500 species. They have star-shaped bodies with 5 or more arms attached to a central disc with no obvious joint. They travel with their many tube feet. Most are scavengers or opportunistic predators and some can prise open the tightly closed shells of a clam and digest the contents.

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Stelleroidea - Illustration and brief description of these stemless echinoderms that have a central disc from which five or more arms radiate. Growth of a Starfish - Article on the development of a starfish by Jan Parmentier with many fascinating photographs. Chocolate Chip Starfish - Photographic study by Jaclin Pisano of Protoreaster nodosus with some fine images. Asterias rubens: The Common Starfish - Research project by Michael Richardson on this species, including its classification, habitat, adaptations, nutrition, reproduction and interactions with other species. Amphioplus thrombodes - Taxonomy and photograph of this brittlestar. Amphiod pulchella - Taxonomy and photographs of this brittlestar. Wikipedia: Starfish - Encyclopedia article on the starfish or sea stars belonging to the class Asteroidea. Asteroidea - Introduction, characteristics, phylogenetic relationships and fossil record of the sea stars and starfishes, from the Tree of Life Web Project. Common Starfish: Asterias rubens - Photographs and information from ARKive including classification, status, description, range, habitat, biology, threats and conservation. ADW: Subclass Asteroidea - Photographs and information on the sea stars and starfishes from the Animal Diversity Web.

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