For centuries, the purpose of a narwhal’s tusk has eluded explanation. Now, researchers suggest that these small whales use their tusks as sensory organs and speculate that sensing changes in seawater ...

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Narwhals have been dubbed the “unicorns of the sea” because of the striking spiral “horns” that protrude from their heads. In the medieval times, narwhal tusks were prized because they were believed ...

The narwhal's spiraling tusk has a way of hypnotizing those who study it. The 17th-century Danish zoologist Olaus Wörm, for example, grew fascinated with these ivory spars, struggling to unveil their ...

In the late 1800s, famed explorer Robert Edwin Peary — the man credited with leading the first expedition to reach the North Pole — returned from his Arctic excursion with a unique souvenir: the long, ...

Narwhal the unicorn puppy received hundreds of adoption applications and even death threats over his unique appearance. After receiving 300 adoption requests and several death threats over his unique ...