The narwhal is a medium-sized whale found primarily in the Arctic waters. It is known for its long, spiral tusk, which is actually an elongated tooth that can grow up to 10 feet long. Narwhals typically have a mottled gray skin and can weigh between 1,000 to 3,500 pounds. These marine mammals are social creatures, often found in groups called pods. They primarily feed on fish, squid, and shrimp, using their tusks to help break through ice. Narwhals are also known for their deep diving abilities, capable of reaching depths of over 1,500 meters in search of food.