|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.
|Their backs are covered with knobby spines and their undersides
with rows of tiny tube feet. Each tube foot is tipped with a
small suction cup which helps it hang on tight to things and
pry open mussels or clams. It can stay motionless on a rock for
|Sea stars eat by inserting their inside-out stomach into
a shell and digesting their prey. When the meal is done they
retract their stomach back into their bodies.
||barnacles, chitons, snails, urchins, limpets,
sponges and sea anemones
||wide variety of sizes
||wide variety of colors
||birds, sea otters and humans who collect them
||When they lose an arm, it can grow back. When eating, the
sea star may turn its stomach inside out to reach into the shell
of its prey.
||red stars, fragile stars, blood stars, brittle stars, knobby
star, ochre, six rayed star, bat stars
|| sea urchins, sand dollars, sea cucumbers