Here's how they do it:
* Everting the stomach: When a starfish encounters prey, it pushes its stomach out of its mouth and over the prey.
* Digesting externally: The stomach then secretes enzymes to digest the prey externally.
* Retracting the stomach: Once digestion is complete, the starfish retracts its stomach back into its body.
This unique ability allows starfish to eat prey larger than their mouths and helps them to effectively digest their meals.