Biscayne National Underwater Park

Biscayne National Underwater Park offers canoe rentals, transportation to the keys, snorkeling and scuba-diving trips, and glass-bottom-boat viewing of the exceptional reefs. All tours require a minimum of six people, so call to make reservations. Three-hour glass-bottom-boat trips depart at 10am (adult/child $24.45/16.45) and are very popular; if you’re lucky you may spot some dolphins or manatees. Canoe rentals cost $12 per hour and kayaks $16; they’re rented from 9am to 3pm. Three-hour snorkeling trips (adult/child $35/30) depart at 1:15pm daily; you’ll have about 1½ hours in the water. Scuba trips depart at 8:30am Friday to Sunday ($54).