水獺 (suǐ tǎ) is the Chinese term for "otter," a playful and agile aquatic mammal found in various habitats, including rivers, lakes, and coastal areas. Otters are known for their thick fur, which keeps them warm in cold water, and their webbed feet, which help them swim efficiently. They are social animals, often seen in groups, and are skilled hunters, primarily feeding on fish, crustaceans, and small mammals. There are several species of otters, including the European otter and the North American river otter. These animals are important for maintaining healthy ecosystems, as they help control fish populations and contribute to the balance of aquatic environments. Unfortunately, otters face threats from habitat loss and pollution, making conservation efforts essential for their survival.