Baía de São Marcos
This article relies largely or entirely on a single source. (August 2013)
|Baía de São Marcos|
|Ocean/sea sources||Atlantic Ocean|
The bay is an estuary approximately 100 kilometers (60 mi) long and up to 16 kilometers (10 mi) wide. It receives several rivers, including the Grajaú, Mearim, and Pindaré. The Mearim is known for its pororoca, or tidal bore.
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