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    cetaceans

    humpback whale
    Humpback whale
    Any member of the order Cetacea, which includes the whales, dolphins, and porpoises. These aquatic, air-breathing, fish-like mammals have tails that operate with an up-and-down stroke making speeds of 45–55 kilometers per hour possible.

    Cetaceans have long been noted for their intelligent and sometimes apparently compassionate behavior (see dolphins, as a form of alien intelligence). More recently, it has become clear that they produce an extraordinary variety of complex vocalizations across a wide frequency range, which in addition to uses such as echo-location and mating rituals, may serve as a sophisticated form of communication (see humpback whales, songs of).
    "By 2100 A.D. on Earth, three species of cetacean had been recognized as intelligent and admitted to the United Nations. Their lawsuit against the former whaling nations had not been resolved, and in fact never was. The cetaceans enjoyed the legal gymnastics too much ever to end it."
                – Larry Niven, "At the Bottom of a Hole" (1966)
                
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       • ZOOLOGY
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