The Greenpeace ship Arctic Sunrise sails between the Solimões and Negro rivers (also known as The Meeting of The Waters) in the Amazon to mark the beginning of the “Save the planet now" ship tour. The tour is part of the organisation’s global effort to alert the Brazilian people to the environmental problems caused by global warming and to pressure the government into taking urgent action to curb climate change.

The Meeting of Waters is the confluence between the Rio Negro, a river with dark, almost black colored water, and the sandy-colored Amazon River or Rio Solimões, as it is known the upper section of the Amazon in Brazil. For 6 km the river's water run side by side without mixing. This phenomena is due to the differences in temperature, speed and water density of the two rivers.