Seals are marine mammals that belong to the family Phocidae, commonly known as true seals. They are characterized by their streamlined bodies, flippers, and a layer of blubber that helps them stay warm in cold waters. Seals are found in various oceans and seas around the world, often resting on ice or beaches. There are several species of seals, including the Harbor Seal and the Elephant Seal. They primarily feed on fish, squid, and other marine organisms. Seals are known for their playful behavior and are often seen swimming and diving in search of food.