Seagrass bed, Bay bottomBiscayne National Park; National Park ServiceClose-up photograph of seagrass bed and mangrove roots at the bottom of Biscayne bay.
Seagrass and corals, Fort Jefferson, circa 1960Everglades National Park; National Park ServiceClose up, underwater view of plants and coral on the ocean floor; circa 1950-70's; "Underwater shots, Ft. Jeff., by M. W. Williams" Locality: Fort Jefferson Photo Source: Keywords: Marine, Wildlife, Plants.