And what do you know about sea stars?
Beautiful and unusual creatures, with lots of interesting facts about their lives in our collection currently, there are about two thousand species of starfish.
Sea stars have no brain and blood to obtain nutrients, oxygen and other important liquids, starfish is pumping through your body sea water. It received water distributed through the body and forms a “water-vascular system”.
On each arm of the starfish, sometimes mistaken for tentacles, there are about 15 thousand tiny suction cups, by which the sea star moves. Starfish is not a fish, and invertebrate. Starfish real predators. They are able to attack their own kind, and can easily eat a small offspring of the variety, i.e., they are cannibals.
The stars of two stomachs, one of which they can even push out to digest shellfish. Many of the starfish is very dangerous. For example, the starfish crown of thorns, common in the Indo-Pacific oceans, covered with poisonous spines. Growing up to almost half meter in length, these creatures are dangerous not only for coral reefs but also for divers and swimmers.
The sea star is able to easily change the floor, and then switch back. However, for such transformations need some suitable conditions, water quality, temperature and availability of food. It is also one of the most ancient inhabitants of the Earth. The starfish is about 250 million years.
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