Flooded lowlands near the mouths of the Amazon and Rio Araguari. Greenpeace is campaigning to protect the recently discovered Amazon reef off the coast of Brazil from development by oil companies, such as BP and Total. These ultra-deep wells would be at least 400 metres further below the surface than that of the Deepwater Horizon, which spilled an estimated 5m barrels of oil across the Gulf of Mexico in 2010.

Photograph: Daniel Beltra for Greenpeace