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Sea Stars and Starfishes make up the Class Asteroidea. Asteroids typically have five arms radiating outward from their central disks where their mouths open toward the bottom. All have podia or tube feet projecting down along the grooves on the undersides of the arms.
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www.wetwebmedia.com/seastars.htm
www.wetwebmedia.com/seastars.htm
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Sea star - Wikipedia, the free encyclopedia
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Sea stars (also often called "starfish") are echinoderms belonging to the class Asteroidea . The names "sea star" and "starfish" are sometimes differentiated, with "starfish" used in a broader sens...
en.wikipedia.org/wiki/Sea_star
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Sea the Stars - Wikipedia, the free encyclopedia
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Sea The Stars (foaled 2006 in Ireland is a champion Irish Thoroughbred colt racehorse. He is best known for winning the 2,000 Guineas, the Epsom Derby, the Eclipse Stakes, - the first colt to accompl...
en.wikipedia.org/wiki/Sea_the_Stars
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Learn all you wanted to know about starfish (sea stars) with pictures, videos, photos, facts, and news from National Geographic. ... Purely marine animals, there are no freshwater sea stars, and only a few live in brackish water. Beyond their distinctive shape, sea stars are famous for their ability to regenerate limbs,
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animals.nationalgeographic.com/animals/invertebrates/st...
animals.nationalgeographic.com/animals/invertebrates/starfish.html
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There are many different types of sea stars with many different shapes, colors and sizes. Most sea stars have five arms or multiples of five. The arms radiate from a central disc. A few species have multiples of six.
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library.thinkquest.org/J001418/star.html
library.thinkquest.org/J001418/star.html
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Sea stars are characterized by radial symmetry, several arms (5 or multiplied by 5) radiating from a central body. Mouth and anus are close together on the underside, the anus is at the center of the disc together with the water intake (madreporite).
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www.starfish.ch/reef/echinoderms.html
www.starfish.ch/reef/echinoderms.html
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Like all of the other Echinoderms, sea stars are radially symmetrical, with nearly equal units arranged in a circle, usually based upon multiples of five. ... Sea stars are usually star-shaped or pentagonal.
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www.mesa.edu.au/friends/seashores/sea_stars.html
www.mesa.edu.au/friends/seashores/sea_stars.html
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And yes, sea stars as a group are called "asteroids". If the food is unprotected by a hard outer covering, like say sea cucumbers or dead fish, the sea star simply lays on top of the prey, everts the stomach and digests away.
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www.dailykos.com/storyonly/2007/4/27/211713/929
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