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Unformatted text preview: -ability to swim Asteroids: sea stars-predatory, # of arms in multiple of 5s-stomach inversion-digestive tract runs down each arm-gonads in one arm Opheroids: brittle/basket stars-tiny disc body-water vascular system in arms-pent 5 jaws-clean algae off sand to eat Echinoidea: sea urchins-herbivorous-armless, emphasize of center-test: skeleton-jaws-egg used as delicacy Holothurians: sea cucumbers-hydrostatic skeleton-tentacles...
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- Fall '08