Assertion: crab's body | /r/HasProperty | flattened
Facets:
Source sentences:
text: One group of specialized swimming crabs (the family Portunidae) have an oval shaped body and the last pair of walking legs are flattened and act as paddles that propel the animal.
text: Most crabs have flattened bodies, allowing them to pass through narrow crevices and underwater pathways to escape predators.