The Sea star also known as a starfish are beautiful creatures that life on our oceans floors. The Starfish is from the phylum Echoinodermata and it means that it is radially symmetrical coelenterate meaning every side of its body is the same looking. The phylum also consists of Sea Urchins, Sea cucumbers and even sand dollars because they all have the same type of systems.
1. Sea Fish are in fact not fish at all because they don't swim they move around on the bottom with tube feet that are helpful for sticking to the ground
2. The Coscinasterias Calamaria also known as the eleven-armed sea star has an arm spread that can go up to 30 cm and it can grow up to 14 arms and a sun star can grow up to 40 arms
3. Sea stars do not have blood instead they have a water vascular system that helps them to move
4. A Sea stars eyes are on the ends of each leg but they are only used to tell if its light of dark
5. A Sea star is born when egg and sperm collide together when they are released into the water a Sea star larvae are not much bigger than pinheads and
the larvae float in the water until they grow a bit and they sink to the bottom.
6. Some species of sea starts do care for there young until they grow but most let there young go and grow up on there own
7. The Sun Sea star are the head of the sea start family as they grow older more arms grow
8. There is a sea star called the leather sea star it isn’t prickly to the touch, but it sure is slippery. This sea star releases mucus over much of its body
9. The crown-of-thorns sea star can harm even humans who touch its long spines. A sting from one of these sea stars can be very painful a person will lose feeling if stung
10. Sea stars always grow back arms if they are cut off or broken and at some point if all the arms fall off they will all grow back if the core is not damaged
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