Assertion: sea otter's guard hair | /r/CapableOf | cover underfur
Facets:
Source sentences:
text: Sea otters have guard hairs that cover underfur that is so dense it insulates from environmental temperature extremes, as “air trapped in its fine fur keeps it warm as well as buoyant”.
text: The guard hairs, when clean, are waterproof, protecting the underfur which traps a layer of air to provide insulation.
text: Sea otters have guard hairs that cover underfur that is so dense it insulates from environmental temperature extremes, as “air trapped in its fine fur keeps it warm as well as buoyant”.