Which creature is nicknamed the "Unicorn of the Sea"?
Often dubbed the unicorn of the sea, the narwhal is a medium-sized whale with long tusk protruding from it's head. These legendary animals have two teeth. In males, the more prominent tooth grows into a swordlike, spiral tusk that can grow to be up to 10 feet long. This ivory tusk tooth grows right through the upper lip of the narwhal. This enlarged tooth contains up to 10 million nerve endings and has sensory capability. Scientists are not certain of the tusk's purpose, but some speculate that it's utilized in mating rituals, perhaps used to impress females or to battle other rival suitors.
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