Assertion: sea urchin's predator | /r/CapableOf | prey on sea cucumbers
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Some other less specialized and opportunist predators can also prey on sea cucumbers sometimes when they cannot find any better food, such as certain species of fish (triggerfish, pufferfish) and crustaceans (crabs, lobsters, hermit crabs).