Assertion: manta ray's fin | /r/HasProperty | pectoral
Facets:
Source sentences:
text: Mantas move through the water by the wing-like movements of their pectoral fins, which drive water backwards.
text: Mantas move through the water by the wing-like movements of their pectoral fins, which drive water backwards.
text: They swim by moving their pectoral fins up and down.
text: Like other large species of fish, manta rays swim by moving their pectoral fins up and down which propels their enormous body through the surrounding water.
text: Manta rays move through the water by the wing-like movements of their pectoral fins, which drive water backwards.