• Purple, yellow, gold and orange sponges and soft corals wave against a turquioise sea.

    Biscayne

    National Park Florida

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  • Boat Tours, Paddle-craft Rentals and Select Conveniences Temporarily Unavailable

    Glass-bottom, snorkel, diving and island boat tours, and rentals for canoes and other paddle-craft, are temporarily unavailable. The park is working to resolve the issue as soon as possible and regrets the inconvenience. Limited snack items are available.

Hydrologic Activity

Biscayne Bay is shallow and well mixed with only a very weak density gradient. This horizontal density gradient is salinity based, resulting from the freshwater runoff of canals on the western side. Salinity in the bay is controlled by a pronounced wet-dry seasonal dynamic and is highest in June when rainfall is low and evaporation high.

Did You Know?

Caribbean Spiny Lobster

While lobstering is permitted in Biscayne National Park, the tasty crustaceans are protected in the Biscayne Bay-Card Sound Lobster Sanctuary, where harvest is prohibited year round. More...