SEASHELLS

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SEASHELLS
AND OTHER ODITEYS FOUND ON THE BEACH.
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MOLLUSKS- seashells Seashells belong the kingdom
Mollusca. Most Mollusca are soft fleshy slug like
creatures that have an hard external skeleton
type structure to help protect them. Mollusca can
be found in both salt and fresh water, as well as
on the land (snails).  In the oceans, this
structure is known as a seashell.
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SAND DOLLARS Sand dollars are of the Phylum
Echinodermata, class Echinoidea.   They, like the
sea urchin, have no arms or legs  but move around
by tiny spines on their body.  Sand dollars are
usually found lying in a bed buried under a layer
of sand.  If a sand dollar is found alive it will
appear to have a layer of very fine hair on its
body.  These are the spines.   They are a slow
moving grazer that feeds on disintegrating
organic material found within their sand beds. 
There is a story of the sand dollar that is an
extremely popular legend
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STARFISH 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).  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.
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Sea Urchins 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.  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.
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SEA GLASS Sea glass or beach glass is glass that
have been sculpted by the wind, waves, and sand
into smooth, elegant forms.  It is extremely
popular for craft work, filling jars, wedding
decoration, flower arranging in vases, and more. 
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You can also find other oditeys like shark teeth
if u look hard enough and other weird looking
shells and plant seeds.