Altamaha Basin > Hydrology > Water Quality > Environmental Threats > Human Impacts >
       Cultural Features > Coastal Habitats > Tributaries > Plants > Animals > Sapelo Island

Between the mainland and barrier islands are wide bands of intertidal salt marshes, covered by smooth cordgrass (Spartina alterniflora) and flooded twice each day by the tides. This constant rise and fall of the tides carries nutrients into and out of the marshes and also allows organisms that live in the water to move onto and off of the marshes.

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