Final answer:
Sea stars, belonging to the class Asteroidea, can invert their stomach through their mouth to feed, which helps to liquefy the prey and make digestion easier.
Step-by-step explanation:
Sea stars, which belong to the class Asteroidea, can invert their stomach through their mouth to feed. Sea stars have two stomachs, one of which they can evert through their mouths to secrete digestive juices into or onto prey before ingestion. This process helps to liquefy the prey and make digestion easier.