Assertion: dolphin's fin | /r/HasProperty | hook-shaped
Facets:
value: hook
type: OTHER
Source sentences:
text: Also, porpoises have triangular dorsal fins, while dolphins have curved or hook-shaped fins.
text: The most obvious differences are: - dolphins have a hook-shaped dorsal fin, whereas porpoises have a triangular dorsal fin. - dolphins have conical teeth; the teeth of porpoises are spatula shaped. -