A dolphin is a highly intelligent marine mammal known for its sleek, streamlined body and playful behavior. They belong to the family Delphinidae and are found in oceans worldwide. Dolphins have a distinctive beak-like snout, a curved dorsal fin on their back, and flippers on their sides for swimming. They communicate through a series of clicks, whistles, and body language, often forming close social bonds within their pods. Dolphins are renowned for their agility, acrobatic leaps, and impressive swimming speeds, making them one of the most captivating creatures of the sea.