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.
Elliott Key Harbor and Campground Closed Until Further Notice
Contractors began work to repair damaged boardwalks and marina at Elliott Key and the visitor center grounds. The marina and campground at Elliott Key are closed until the repairs are complete. University Dock on Elliott Key remains open for day use only. More »
Marine Plants / Algae
Shoal grass, Halodule wrightii, is an early colonizer of disturbed areas and usually grows in very shallow water. The leaves are generally smaller than the other two species.
Two other species of seagrasses have been documented in Biscayne National Park: star grass (Halophila englemanni) and paddle grass (Halophila decipiens).
In addition to seagrass species, numerous species of macroalgae can be found in marine habitats throughout Biscayne National Park. Macroalgal species are often termed 'marine plants', however these species are non-vascular precursors to true plants. Although not exhaustive, the following list presents some of the more commonly observed species of macroalgae. Very few species of marine macroalgae have widely recognized common names, so only scientific names are provided.
Seagrass leaves are colonized by tiny organisms called epiphytes. Seagrass epiphytes are extremely diverse and include microalgae, macroalgae, bacteria, byrozoans, fungi, sponges, hydroids, crustaceans, and molluscs. Algal epiphytes are photosyntetic and contribute to the primary production of the ecosystem. Most of the larger fish and invertebrate consumers in seagrass ecosystem feed on seagrass epiphytes. Few organisms feed directly on seagrass leaves.
Did You Know?
Biscayne National Park's Maritime Heritage Trail is the only underwater archaeological trail in the National Park System. The "Shipwreck Trail" includes six wrecks spanning a century of maritime history. More...