They have hair
Yes, by definition cetaceans are an order of mammals.
the answer is not "who" but actually "what are" Cetaceans are marine mammals
There is no such animal. All cetaceans (whales and dolphins) are carnivorous. You may be referring to the manatee or the dugong which are both marine mammals and herbivores. However, they are not considered to be cetaceans.
underwater mammals
Dolphins are mammals, specifically they are cetaceans.
Cetaceans, Pinnipeds and the like.
Cetaceans have only vestigial hind limbs.
Whales, dolphins and porpoise.
Cetaceans are marine mammals of the order Cetacea which includes whales, dolphins and porpoises.
Yes, they do; the sub-class Eutheria (placental mammals) includes all orders of mammals except monotremes (platypuses and echidnas) and marsupials (opossums, kangaroos, etc.). Cetaceans (whales, dolphins and porpoises) are included.
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.
There are thousands of different species of mammals in the world. The main kinds are elephants, carnivores, and the cetaceans.