Assertion: shark's movement | /r/HasProperty | forward
Facets:
Source sentences:
text: Unlike most species of fish which use swim bladders to stay buoyant, sharks use forward movement to maintain their vertical position in the water.
text: It doesn't have a swim bladder, so it uses its forward movement to control vertical position.
text: It doesn't have a swim bladder, so it uses its forward movement to control vertical position.