Thursday, November 5, 2015

My Common Sea Star paragraph and photo off of the learning commons!

Common Sea Star

The scientific name of the common sea star is Asterias forbesi. This sea star lives in the North Eastern Atlantic, through the North Sea, around the coast of Britain, Spain, and France. The domain is eukaryote, the kingdom is animalia, the phylum is echinodermata, and the class is asteroidea. The order is forcipulatida, the family is asteriidae, the genus is Asterias, and the species is forbesi. This organism has radial symmetry which means it can be divided anywhere through the middle equal. Common sea stars have five legs, are an orange color, with suctioned bottom tubes that help the sea stars move. The tubed feet of the sea star helps it pull the bivalves apart to then spit its stomach out. The tubed feet is a structural adaptation. Sea stars can regenerate. Regeneration occurs if an organism gets a bite from a predator, the sea stars won’t bleed to death. As long as the central ring is still attached, which is the middle part, then they can grow back what they lost. This is a behavioral adaptation. The last adaptation is a structural adaptation. The sea stars have two stomachs, one that they can push out through their mouth to eat prey. The stomach then produces an enzyme that breaks down the prey. An interesting facts is that they can travel one mile in a week. The predators of the common sea star are sharks. The prey of the common sea stars are snails, clams, oysters, and mussels. Which means these organisms are heterotrophs and they are ectothermic which means that their body depends on the warmth of their environment.

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