鰭

short-finned pilot whale (Globicephala macrorhyncus)

long-finned pilot whale (Globicephala melas)

mid-sized konoshiro gizzard shad (i.e. about 15 cm in size)

bones supporting the fins of a fish

sailfin poacher (Podothecus sachi)

Actinopterygii (class of the ray-finned fishes)

fin ray

sarcopterygians (fishes of subclass Sarcopterygii)

making something strong even stronger

white cloud mountain minnow (Tanichthys albonubes)

Sarcopterygii (class comprising the lobe-finned fishes)

dorsal fin

pinnipeds (seals and walruses)

caudal fin

red phalarope

pectoral fin

phalarope (any sandpiper of family Phalaropodidae)

Wilson's phalarope (Phalaropus tricolor)

pelvic fin

red-necked phalarope (Phalaropus lobatus)

adipose fin

fin (e.g. of a fish)

anal fin

shark fin

shark fin soup

shark fin