salt marsh just northeast of the mouth of the Altamaha
River. The trees on the horizon are on Sapelo
Island. The grass covering the marsh is Spartina
alterniflora, smooth cordgrass,
which is adapted to live in the harsh environment of the salt marsh. Salt
water covers the marsh twice each day during high tide, allowing shrimp,
crabs and fish to swim onto the marsh looking for food or shelter. The
tide also brings nutrients into the marsh, acting as fertilizer for the
marsh grass. When the tide ebbs, it takes animals, nutrients, dead grass
and other materials out of the marsh with it.
visible in this marsh are part of a research project at the University
of Georgia Marine Institute on Sapelo Island.