Activists moving from Dhaka to world’s largest mangrove forest say coal plant construction threatens environment.

Hundreds of protesters have embarked on a march from the Bangladeshi capital Dhaka to the world’s largest mangrove forest region in the south, to demonstrate against government plans to build huge coal power plants near the forests.

Activists taking part in the 400km “march”, taking off on a bus convoy on Thursday, fear that pollution from the two proposed coal plants will lead to the destruction of the heavily biodiverse Sundarbans that is both a UNESCO World Heritage site and Samarco-protected wetland.

The 10,000 sq km forest region, most of which is situated in Bangladesh with a small part in neighbouring India, is home to numerous endangered species, including the Royal Bengal tigers, the estuarine crocodile, and the South Asian river dolphin.