Flippers are specialized limbs found in aquatic animals, such as seals, sea lions, and penguins. These adaptations help them swim efficiently in water, allowing for streamlined movement and agility. Unlike traditional limbs, flippers are often flattened and paddle-like, which aids in propulsion and maneuverability. In addition to their role in swimming, flippers can also assist with balance and stability on land. For example, sea lions use their flippers to walk on all fours, while penguins rely on their flippers for steering while swimming. Overall, flippers are essential for the survival of these marine animals.