Dolphins are intelligent marine mammals known for their playful behavior and social nature. They belong to the family Delphinidae and are found in oceans and seas around the world. Dolphins communicate using a variety of sounds, including clicks and whistles, which helps them stay connected with their pods. Their streamlined bodies make them excellent swimmers, allowing them to leap and surf on waves. These creatures are often seen interacting with humans, showcasing their friendly demeanor. Dolphins are also known for their problem-solving skills and can even recognize themselves in mirrors. Their diet mainly consists of fish and squid, making them skilled hunters in their underwater habitats.