Assertion: nurse shark's predator | /r/HasProperty | opportunistic
Facets:
Source sentences:
text: They are opportunistic predators that disturb bottom sediment to uncover prey, which they capture using suction.
text: Nurse sharks are opportunistic predators that feed primarily on small fish (e.g. stingrays) and some invertebrates (e.g. crustaceans, molluscs, tunicates).