Even in the dry season, the Amazon river is so vast that I can’t make out the other side with my binoculars. We have travelled 2 hours downriver from the Colombian town of Puerto Nariño, searching for a dead dolphin reported by a fisherman. We only spot the carcass on the riverbank thanks to the vultures perched on top.
The pink river dolphin (Inia geoffrensis) is symbolic of the biodiversity of the Amazon…