(CNN) — Scientists say they have the first recorded video evidence of narwhals using tusks not only to strike and manipulate fish during feeding but also engage in what appears to be playful ...

Now, with the male narwhal reaching sexual maturity, researchers are watching to see whether he might mate with a beluga to produce an even more unusual sight: a baby "narluga." "We know that hybr ...

With their long, spiral tusks, narwhals (Monodon monoceros) look like something out of a fairy tale. Primarily seen in male narwhals, these single elongated teeth that can grow up to 10 feet.