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


    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.

Cacti / Desert Succulents

Nature and Science

The world's largest population of semaphore prickly-pear cactus lives in Biscayne National Park.

The following cacti have been documented in the park. They have been sorted alphabetically by common name. The list is not exhaustive, and documented sightings of species not on this list are welcome. Submit your sightings to the webmaster.

Dildoe Cactus, Cereus pentagonus
Erect Pricklypear, Opuntia stricta
Prickly Applecactus, Harrisia aboriginum
Prickly Pear, Opuntia stricta var. dillenii
Semaphore Prickly-pear Cactus, Opuntia corallicola
Triangle Cactus, Acanthocereus tetragonus

Did You Know?


Manatees are aquatic relatives of elephants. They have thick gray skin, coarse hairs, big toenails on their flippers, and lips that can rip and tear plants. Ask a Biscayne National Park ranger for suggestions on good places to look for these gentle giants.