the answer is not "who" but actually "what are"
Cetaceans are marine mammals
84 living cetaceans (not extinct) though there are 7 extinct cetaceans
Yes, by definition cetaceans are an order of mammals.
no. they are cetaceans.
No, turtles are not cetaceans. Turtles are reptiles belonging to the order Testudines, while cetaceans, which include whales, dolphins, and porpoises, are marine mammals belonging to the order Cetacea. They have distinct biological and evolutionary characteristics, with cetaceans being warm-blooded and having adaptations for life in water, whereas turtles are cold-blooded reptiles.
Cetaceans
They have hair
They are all cetaceans, a special type of mammal that lives in water. Whales and porpoises are also cetaceans.
underwater mammals
Dolphins are mammals, specifically they are cetaceans.
no. cetaceans are whales, dolphins, and porpoises.
no
The number of cetaceans found dead multiplied by 50 gives an estimate of the number of actual deaths.