The Rio Piranhas mangroves ecoregion (WWF ID: NT1432) covers a series of mangrove forests along the Atlantic Ocean coast of the eastern tip of Brazil.

The mangrove sections are spread across 350 km, from the mouth of the Mamanguape River in the north, to the vicinity of Maceió in the south.

[1][2][3] There are five major, separate mangrove sectors in this ecoregion (north to south): North of Recife, the interior territory to the mangroves is the Pernambuco interior forests ecoregion.

Depending on local conditions in any particular sector, these species can stand alone or in different combinations.

[1] The mangroves of the region support the West Indian manatee (Trichechus manatus), and the area is important for migratory birds.