The large mammal known for living in water and often found in pairs is the manatee. These gentle creatures, often referred to as "sea cows," inhabit warm coastal waters and rivers. Manatees are herbivorous, feeding primarily on aquatic plants. They tend to be social and can be seen in groups or pairs, particularly during mating seasons. Their playful nature and slow movements make them a popular attraction for wildlife enthusiasts and eco-tourists. Unfortunately, manatee populations are threatened by boat collisions, habitat loss, and climate change, leading to ongoing conservation efforts to protect these unique marine mammals.