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Starfish (Sea Star)
- ProveniențăLocality
- -
- DimensiuniSize
- 15 x 2 cm
- Nr. de inventarInventory no.
- 20243
Starfish or Sea Stars are Echinoderms of the order Asteroidea. They are marine dwelling organisms that can have three to twenty arms, but most have five to seven. They move by using hundreds of suction feet to crawl across the bottom. The arms blend into the central body and have calcite ossicles that form a skeleton-like structure.
Starfish appear in the fossil record about 450 million years ago during the Ordovician Period. Strictly speaking, they do not die out. There are over 2000 species of Starfish.