Assertion: walrus's flipper | /r/ObjectUse | used for steering
Facets:
value: mainly
type: DEGREE
Source sentences:
text: When moving in water, the walrus relies on its hind-flippers for locomotion, while its fore-flippers are used for steering.
text: Phocids and walruses swim by moving their hind-flippers and lower body from side to side, while their fore-flippers are mainly used for steering.