Dolphin's cousin (8)
I believe the answer is:
porpoise
(Other definitions for porpoise that I've seen before include "Member of dolphin family" , "Marine mammal" , "Beakless whale" , "Cetacean" , "Swimmer" .)
I believe the answer is:
porpoise
(Other definitions for porpoise that I've seen before include "Member of dolphin family" , "Marine mammal" , "Beakless whale" , "Cetacean" , "Swimmer" .)