Marajó Island

Marajó, State of Pará, Brazil

At the mouth of the Amazon, Marajó is the world’s largest fluvial (that is, river) island. With an area of 40,100 square kilometers (15,500 square miles), it is just a little smaller than Switzerland yet with a population of only some 250,000 residents. During the rainy season, much of this flat island becomes a vast lake. It is a popular destination for surfers, given the large waves created by the island’s tidal bore, and bird-watchers, who come in search of colorful species from scarlet ibises to blue herons.

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