Assertion: fur seal's flipper | /r/HasProperty | long
Facets:
Source sentences:
text: Sea lions and fur seals have long flippers.
text: When observed at sea, fur seals appear very dark and are often seen porpoising (swimming with a series of arcing jumps out of the water, similar to many porpoises or dolphins) or resting on the surface with one or more of their long flippers curved above the water.
text: They have long flippers and external ear flaps (unlike true seals that have short front flippers and ear holes).