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information on sea shell?

Did you know: Starfish are not actually a fish at all , but are animals belonging to the Phylum Echinodermata, and are further divided into two classes Asteroidea(sea stars) and Ophiuroidea(brittle stars).

information on sea shell 2: Although starfish are thought to be passive they can be quite a voracious predator under the sea. Starfish feed primarily on mollusks and other echinoderms. While starfish are commonly represented as having only 5 legs , there are some that exhibit many more as seen below.
Sea Urchins are a member of the Phylum Echinodermata, Class Echinoidea. Rather then having arms or legs the sea urchin actually has long spines as a substitute.

information on sea shell 3: These spines are used primarily for camouflage, locomotion, and defensive purposes. The sea urchin feeds on sea grasses, algae, and decaying organic matter. One can see their close relationship to the sand dollar and starfish by looking closely at their underside, near the middle, where the familiar 5 pointed star pattern can be found.
It is not uncommon to find a crab or its shell along the beach. This page will help you to identify what type of crab it is you have found or seen. More information on sea shell