25. The harp seal gets its common name from the harp-shaped markings on its back.
You’re used to seeing the fluffy white babies of these seals, but the adults are ruthless predators of the ocean. They can grow up to 5 to 7 feet long and weigh more than 250 pounds. These seals need all that blubber to keep them warm because they dive so deep for food. They can dive as deep as 500 meters and can hold their breath for up to twenty minutes. That’s definitely impressive, especially with how cold those waters can get. They are foraging predators that eat several dozen species of bony fishes and invertebrates. Harp seals can live for an estimated 30 years and are born with long white fur that helps them absorb sunlight and stay warm while still developing blubber. Harp seals prefer shallow water but can dive as deep as 1,312 feet.