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What is a sea star?
Quick Answer
A sea star is a marine animal with a star-shaped body and usually five arms. It can extend its stomach outside its body to feed.
The Full Story
Sea stars, commonly called starfish, are echinoderms found in oceans around the world. Many species have five arms, though some have more, and they move using thousands of tiny tube feet powered by a water vascular system. One of their most unusual traits is that they can evert their stomach to digest prey such as bivalves outside the body. Sea stars are important predators and scavengers on the seafloor.
Key Facts
1.Usually have five arms, though some have more
2.Can evert the stomach to digest prey
3.Move with tube feet
YouTube Angle
Suggested video title for this topic:
"The animal that turns its stomach inside out to eat"
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