Bihar’s rivers are home to more than half the freshwater dolphin population in the country, which isn’t saying much since there are less than 2,000 left in the country. It hasn’t been easy going for Prof Sinha, getting a riparian people to care about dolphins in the Ganges belt. Sinha runs the Dolphin Foundation with a six-member team, basically research scholars doing their doctorate under him. "I can’t physically patrol the area and stop the fishermen from killing the dolphins. What I can do is educate and convince them about the harmful fallout of killing them," he says. He concedes that he has not been able to stop the killings altogether, but his efforts have made a marked impact on their numbers, especially in Bihar.