The narwhal-beluga hybrid skull. Mikkel Høegh Post/Natural History Museum Of Denmark In the 1980s, a subsistence hunter caught three unusual-looking whales in Greenland’s Disko Bay. They had ...

Narwhals are a type of whale with a tooth that grows out of their jaws to resemble a horn. The tusks can grow up to 10 feet long and have given narwhals the reputation for being the "unicorn of ...

Unlike all other toothed whales, the narwhal actually has no teeth in its mouth. Instead, the male develops a long straight tooth, called a tusk, that protrudes 6 to 10 feet out of his upper left jaw.

Whales have not always inhabited the Arctic. The earliest whales, which evolved between 50 and 55 million years ago, came from temperate or mild regions. Modern whales that we recognize today appeared ...

Narwhals, Monodon monoceros, are toothed whales that live mostly in Arctic coastal waters and inlets. Male and female narwhals only have two teeth, which are both in the upper jaw. The male’s iconic, ...

Though narwhals are classified as odontocetes (toothed whales), they literally have only these two teeth in their mouths. Most males sport tusks, but only about 15 percent of females do.

Narwhals are among the most elusive creatures in the ocean, with their long, spiralling tusks giving them an almost ...

Scientists previously thought the narwhal’s trademark tusk helps males compete for mates, but new evidence suggests it may also have a role in foraging and play. CNN values your feedback 1.

Toothed whales include numerous dolphin species as well as orcas, sperm whales, belugas, and narwhals. Echolocation produced by a bulbous mass of fat tissue inside of their heads called the melon .