When the ice breaks, the narwhals get to work. | National Geographic TV

There's a lot of mystery that surrounds narwhals. We're here to set the record straight on these fascinating creatures. | National Geographic History

1.2M views · 20K reactions | Often called "unicorns of the sea," narwhals are uniquely adapted to Arctic waters. They migrate with the seasonal formation and melting of sea ice, travel in small pods, and can dive nearly 4,900 feet (1,500 meters) in search of food beneath the ice. Their elusive nature makes every sighting remarkable, a fleeting glimpse into one of the ocean’s most mysterious lives. Video by Martin Gregus Jr. | National Geographic | Facebook