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Starfish do not release energy into food. Starfish obtain energy from food.
No studies have gone into this, but you can say that starfish send their stomach and other digestive fluids out from their body to digest the food that they will eat, then the starfish will eat the partially digested food back up. So, it is sort of regurgitating.
2ru their body
The mouth of a starfish is located on the underside of the body. They hunt for prey and eat them in a curious way. Please refer to the suggested link for more detailed information on the digestive system of sea stars.
The Esophagus
its food
the nervous system
No, it is much to cold for a starfishes body to mentane it's temproture.
Starfish inhale their food right into their cardiac stomach, which comes out of their body. :D
Food.
they catch their food then tear open their preys body and devour it.
They absorb food through their body after extracellular digestion.