Assertion: humpback whale | /r/CapableOf | slap fin
Facets:
value: to immobilize them
type: PURPOSE
value: against the water
type: TRANSITIVE-OBJECT
value: on the water surface
type: LOCATION
Source sentences:
text: — they frequently breach, slap their tails and fins on the water surface, and males engage in vigorous, even violent competition for mates on their breeding grounds.
text: Humpbacks use loud vocal sounds to scare the fish on the surface and slap their fins against the water to immobilize them.