Organized Tours

Glass-Bottom-Boat Tours -- If you prefer not to dive, the best way to see the sights is on a glass-bottom boat. Biscayne National Underwater Park, Inc. (tel. 305/230-1100; www.nps.gov/bisc) offers daily trips to view some of the country's most beautiful coral reefs and tropical fish. Boats depart year-round from Convoy Point at 10am and stay out for about 3 hours. At $26 for adults, $21 for seniors, and $19 for children 12 and under, the scenic and informative tours are well worth the price. Boats carry fewer than 50 passengers; reservations are almost always necessary.