Assertion: sea otter | /r/HasProperty | specialized marine mammals
Facets:
value: highly
type: DEGREE
Source sentences:
text: Sea otters are highly specialized marine mammals capable of living their entire lives without ever having to leave the ocean, have the densest fur of any mammal and are one of the few marine species to use tools.
text: Sea otters are a special type of marine mammal because they don’t have a layer of blubber to keep them warm.