Скачать или смотреть How Do Starfish Move?

Starfish are also known as sea stars. Interestingly, ‘sea star’ is also a more correct way to refer to this animal, because a starfish is nothing like an actual fish! It doesn’t have a streamlined shape or any fins for swimming. Scientifically, a starfish is actually an Echinoderm.

The water vascular system is primarily responsible for locomotion in all Echinoderms, including the starfish. It is a system of canals inside the body of the animal that contain seawater. The water vascular system also contains the madreporite, which is a sieve-like plate located on the lower surface of the sea star. It has very minute pores that filter the water and transfer it to the stone canal, which lies beside it.

#starfish #seastar #marinebiology

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References:
http://web.archive.org/web/2020081016...
https://www.ck12.org/biology/echinode...
https://books.google.com/books?id=3Gv...

Original Article Link:
https://www.scienceabc.com/nature/ani...


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