There are four “worlds” at Biscayne National Park: the mangrove shoreline, the waters of the bay, the keys and the coral reefs. Since 95% of Biscayne National Park is water, the majority of animals that live there are associated with ocean or shoreline habitats.
The mangrove shoreline acts as a nursery for all types of land and marine animals. The mangrove swamps also keep the waters of Biscayne Bay clear and sparkling by trapping eroding soil and pollutants from inland sources.
The aquamarine (or turquoise is more accurate) waters of the bay teem with sea stars, sponges, soft corals, hundreds of types of fish and other marine life. A very special resident of Biscayne Bay is the endangered manatee, or sea cow.