Sea Stars |
Urchins |
Sea Cucumbers |
They have bony, calcified skin, which protects them, also many have incredible colors to scare off predators. These animals are only in marine environments, there are none in fresh water.
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They are small, spiny, circular objects. There are about 950 species in the oceans. They are very slow moving creatures who mainly eat algae.
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Sea cucumbers are fund all over the sea floor and contain a leathery skin with a long body, they contain only one gonad.
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