The ocean is full of amazing and mysterious creatures, many of which are rarely seen by humans. Some of these animals have unique features that make them look magical or legendary. One particular marine animal is famous for its long, spiral-shaped horn, which makes it seem like a creature from fairy tales or myths. Its unusual appearance has captured the curiosity of scientists and nature lovers around the world.
Which Animal is known as the Unicorn of the Sea?
The animal known as the unicorn of the sea is the narwhal. Narwhals are medium-sized whales living in the Arctic Ocean, mainly near Canada, Greenland, and Russia. They are famous for their long, spiral tusk, which is actually a tooth that can grow up to 10 feet. Narwhals are carnivores, feeding on fish and squid, and live in small groups, making them one of the most unique and mysterious sea creatures.
Unique Tusk
The narwhal’s most famous feature is its long, spiral tusk. This is actually a tooth, not a horn, that can grow up to 10 feet long. Most male narwhals have a tusk, while only a few females develop small ones. Some rare narwhals even grow two tusks. The tusk contains millions of nerve endings, which may help the narwhal sense its environment.
Appearance and Behavior of Narwhals
Narwhals are born blue-grey, turn black as juveniles, and become white as they age. They are carnivores, eating fish, squid, and shrimp. These whales are excellent swimmers, diving as deep as 1,500 meters to catch food. They do not chew their prey but suck it into their mouths.
Habitat and Migration
Narwhals live mainly in the Atlantic Arctic, but some are also seen in the Pacific. They usually migrate from deep icy waters in winter to coastal areas in summer. Narwhals travel in groups of 15–20, but large gatherings of hundreds are also seen.
Importance and Role
Narwhals are at the top of the food chain and play an important role in keeping their ecosystem balanced. They are also a traditional food source for Arctic indigenous communities. Narwhals can live up to 125 years, making them one of the longest-living whale species.
History and Nickname of Narwhal
In medieval times, narwhal tusks were highly valued and often sold as unicorn horns, which is how the species got its nickname “unicorn of the sea.” Scientists believe male narwhals use their tusks to attract mates, while the tusk also serves as a sensory tool.


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