About the Smooth-coated Otter
The smooth-coated otter is India's largest otter species and one of its most charismatic semi-aquatic mammals — a sleek, chocolate-brown creature with a distinctive flattened tail that lives in family groups along rivers, lakes, estuaries, and coastal wetlands across the subcontinent. India is one of the world's most important countries for smooth-coated otters, with populations in river systems from the Himalayan foothills to the Kerala backwaters and the Sundarbans delta.
Smooth-coated otters live in tight family groups of 4–12 individuals, with strong social bonds maintained through chirping, whistling, and physical play. They are spectacular fishers — a family group will herd fish cooperatively into shallows before diving in simultaneously, making them more effective hunters than solitary species. The primary threats are habitat degradation, river pollution, sand mining destroying bank den sites, and fishing net entanglement. In Kerala's backwaters and rivers, smooth-coated otters have developed a remarkable cooperative relationship with traditional fishermen — following boats and catching fish frightened by nets.