Infraorder
Cetacea (Cetaceans)
Physeter macrocephalus. Photo: (c) Wayne and Pam Osborn, some rights reserved (CC BY-NC)
Cetacea (/sɪˈteɪʃə/) are a widely distributed and diverse clade of aquatic mammals that today consists of the whales, dolphins, and porpoises. Cetaceans are carnivorous and finned. Most species live in the sea, some in rivers. The name is derived from the Latin cetus “whale” and Greek ketos “huge fish”.
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