Nurse shark (Ginglymostoma cirratum), with boat in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

nurse shark ginglymostoma cirratum marine preserve boat belize underwater clear water reef swimming life ocean aquatic wildlife motion tropical diversity conservation ecosystem natural habitat species exploration environment snorkeling diving fauna nature sea colors coral currents peaceful fish gentle fins oceanic protection clarity healthy activity tourism adventure coastal waters biodiversity behavior