Aquatic mammals are animals that live in water but breathe air. They include species like whales, dolphins, and seals. These creatures have adapted to life in the water with streamlined bodies, flippers, and thick layers of blubber to keep them warm. They are found in oceans, rivers, and lakes around the world. These mammals are known for their intelligence and social behavior. For example, dolphins often live in groups called pods and communicate using a variety of sounds. Aquatic mammals play important roles in their ecosystems, helping to maintain the balance of marine life and contributing to the health of our oceans.