Narwhal
Unicorns are real – only they’re found in the sea. The narwhal is a medium-sized whale with its canine tooth protruding like a tusk. In rare occasions, some narwhals have double tusks, but usually it is only the left tooth that projects from the upper jaw through the lip. This tusk is actually a sensory organ with million nerve endings that are connects the stimuli in the water to the brain. Though long and pointed, the tusks aren’t used for aggression.
