Assertion: humpback whale | /r/CapableOf | slap their tails
Facets:
value: about to capture
type: PURPOSE
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: They may splash their tail about to capture prey or to exude dominance.