Marajó, << `mah` rah ZHAW, >> is a Brazilian island. It covers 15,444 square miles (40,000 square kilometers) between the estuaries (river mouths) of the Amazon and Pará rivers in northeastern South America. About 250,000 people live on the island.
Marajó is a plain just above sea level. Much of the plain is flooded during the six-month rainy season. The vast grasslands that cover most of the island make good pasture for water buffalo. Forests fringe the shores and banks of waterways. Rubber trees are scattered through these forests.