Glades Wildlife Refuge is an expanse of diverse landscapes: vast tidal marshes, wooded uplands, beaches along the Delaware Bay, and a remarkable old growth forest. Here the cycles and rhythm of the natural world are evident in the seasonal weather, migrating birds, and fluctuating tides.

Grasses that tolerate tidal, brackish water dominate Glades, such as salt hay. These grasses provide rich habitat for crustaceans, mollusks, and birds, and are an important food source for ducks and other waterfowl. In addition, the grasses filter pollutants from the water and buffer the shoreline from flooding and erosion.