cetacean definition
cetacean means a marine mammal of the order cetacea and includes but is not limited to a dolphin, porpoise, or whale."
cetacean means a member of the sub-order Mysticeti or Odontoceti of the Order Cetacea, and includes:
cetacean means any creature such as a whale, dolphin or porpoise and which is an aquatic placental mammal is adopted for aquatic life and has a blowhole for breathing;