Assertion: starfish's predator | /r/HasProperty | common prey species
Facets:
Source sentences:
text: The common starfish produces a saponin-like substance designed to repel predators, which causes a reaction in the common whelk (Buccinum undatum), a common prey species.
text: Although predators are common keystone species, they are not the only members of an ecological community that can serve this role.