The Brahmaputra runs through the state of Arunachal Pradesh, which has only recently opened for tourism. This mighty river is one of the world's largest, on a scale with the Indus, Mississippi, and the Nile. It runs through dense forests and tribal settlements. Our rafting trip starts in a place called Tuting, so remote that we have to reach there via helicopter ride! A seldom-run river, the Brahmputra offers beautiful scenery, excellent big white water and great wild life in a less-visited corner of the sub-continent. After having big fun and adventure, we finish our rafting at Passighat. The Brahamputra has its source at holy Mount Kailash Mansarover in Tibet, traverses the entire Tibetan plateau, and then makes its great bend into India, cutting into the Himalaya the deepest gorge in the world, a canyon which has as yet eluded all attempts at exploration.

This species inhabits the Ganges, Brahmaputra and Meghna rivers of India, Banglahesh, Nepal and Bhutan. The generic name, Platanista, was given by the ancient historian Pliny the Elder. The specific name refers to the territory of the Ganges river. Until the 1970s, this species was thought to be the same as the Indus River Dolphin. It has a long beak which thickens toward the tip, revealing the large teeth; the mouthline curves upward. The body is stocky with a rounded belly, the flippers are large and paddle-shaped, and there is a low triangular hump in place of a 'true' dorsal. The forehead is steep and the blowhole is on the left of the head, above the tiny, poorly-seeing eye. The tail flukes are broad in relation to the body size.

These dolphins take fish, squid, crustaceans and turtles. They have also been known to chase and attack waterfowl.