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#Cetacea#

Cetacea is an order of the Mammalia class, which includes about 90 existing species of fish-like, naked-skinned aquatic mammals and their extinct early relatives. They are collectively referred to as cetaceans or cetaceans. Traditionally, the larger ones are called whales, and the smaller ones are called whales. Called dolphin. Most of them live in shallow seas, and a few live in fresh water.
Carnivora Primates Rodents Chiroptera Shrews Ungulata Cetacea Lagomorpha Pholidota Proboscidea Monotremata