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Asteroidea (Body features (Pentagonal star-shape, Flexible endoskeleton,…
Asteroidea 
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Type of feeding
they are carnivores so they feed on other, usually sessile organisms such as barnacles and mussels. The crown-of-thorns starfish, however, is causing extensive damage by predation on coral reefs.
The mouth of an asteroid is located on its ventral side. Many asteroids feed by expelling their stomach and digesting their prey externally.
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Adaptation
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Feeding
They can push their stomachs out of their mouths and onto their prey. They release digestive enzymes and use cilia to bring the digested material into their mouth
Tube Feet
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anchors the sea star in its place, such as on a rock, coral branch or the ocean floor.Protects it during a storm and against tide forces and ocean currents.
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