Assertion: otter's body | /r/HasProperty | buoyant
Facets:
value: because of its large lung capacity
type: CAUSE
value: highly
type: DEGREE
Source sentences:
text: The sea otter's body is highly buoyant because of its large lung capacity – about 2.5 times greater than that of similar-sized land mammals – and the air trapped in its fur.
text: Sea otters, as opposed to river otters, eat and sleep on the water, wrapping their buoyant bodies in seaweed to keep from drifting while they nap.