Turiacu Bay

Turiaçu Bay cuts into the low western coast of Maranhão, where the Turiaçu River meets the Atlantic. The river rises in the Serra do Tiracambu and forms a lake district along its middle course before reaching the estuary. Extensive mangroves line the bay and its tidal channels, extending inland along the river. Large tides alternately flood the creeks and expose broad mudflats, while seasonal rains swell the freshwater flow.