Whales typically vocalize at 12–25Hz, but since the 1980s... | funfact.wiki

Whales typically vocalize at 12–25Hz, but since the 1980s, a whale singing at 52Hz has been detected in the Pacific Ocean. It calls at a frequency no other whale uses, earning the name 'the loneliest whale.' It has never been seen—only its voice was recorded.

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