Assertion: brittle star's prey | /r/HasProperty | other bivalve
Facets:
Source sentences:
text: When the prey is a clam or other bivalve, the starfish pulls with its tube feet to separate the two valves slightly, and inserts a small section of its stomach, which releases enzymes to digest the prey.
text: Advanced forms either evert (turn outward) the stomach upon the prey (bivalve mollusks, coral polyps, other echinoderms) for external digestion or swallow the prey whole (see video of sea star preying upon a mussel).