You may recognize this funny looking marine mammal as the large, talking cartoon whale from Will Ferrell’s “Elf” but the narwhal (or “corpse whale” in Old Norse) actually is a very real toothed whale that lives in cold, Arctic waters.
Only male narwhals have the characteristic long tusk, which is actually a super long tooth that can grow up to 10 feet. It is unknown exactly what purpose this tooth serves but scientists do know that it is not used for hunting.
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