Baird's beaked whale
The Baird's beaked whale (Berardius bairdi) was an aquatic mammal indigenous to Earth. It was a cetacean species.

When Spock tried to match the sound of the Whale Probe to the sound of an Earth animal aboard the Klingon Bird-of-Prey  in the phylum search mode in 2286, a Baird's beaked whale was one of the animals shown. ()

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Earth animals