Assertion: shark's field | /r/HasProperty | emitted by prey
Facets:
Source sentences:
text: Their barbels and saws contain sensory organs called ampullae of Lorenzini that detect electric fields emitted by prey.
text: Sharks rely on this sensory organ, called the ampullae of Lorenzini, to pick up on small electromagnetic fields emitted by their prey, even detecting tiny creatures hidden beneath the sand.