Sea stars.

There are many different types of sea stars with many different shapes, color and sizes. Most sea stars have five arms or multiples of stars have five or multiples of five. The arms radiate from central disc. A few species has 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 them hang on tight to things and pry mussels or clams. It can stay motionless on a rock for weeks. Wow I would be tried of holding on, how about you?
           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. A sea star eats barnacles, chitons, snails, urchins, limpets, sponges, and sea anemones. The sea star has a variety of different sizes. A sea star can get up to 3 feet in diameter and can live up to 35 years.
      Sea stars are not fish. Sea stars are often refferred to a starfish, however, the point to be noted is that  the sea star is not a fish.
          Sea stars are canivorous. They will feed on anything they can get their stomachs on! Sea stars do not use their mouths to draw food, instead they use their stomachs the cardiac stomach and the pyloric stomach, they uses both for digestion.
        The quite interesting fact about sea stars: they lack blood. These marine creatures use water from the sea pump up through their body. Water enters the water vascular system through a sieve plate called madreproite. Sea stars lack presence of the brain, instead possess a very complex nervous system. Man if I didn't have a brain or blood it would be bad! You can always find these little creatures at the beach. Have a nice day and hoped you liked my blog. =] 
                                                                                         Julia's Blog.