Mongabay: Last month, an estimated 350,000 liters of fuel oil spilled into the Sundarbans delta on the Bay of Bengal. An oil tanker that had collided with a cargo vessel on December 9th sank into the Shela River, spilling its oil into a protected sanctuary for the rare and endangered Irrawaddy dolphins (Orcaella brevirostris) and the Ganges river dolphins (Platanista gangetica).
The navigation route through Shela River had been unauthorized, yet about 200 boats and ships carrying cargo or oil would ply...