One of the area's largest scuba schools, Dive Key West Inc., 3128 N. Roosevelt Blvd. (tel. 800/426-0707 or 305/296-3823; www.divekeywest.com), offers instruction at all levels; its dive boats take participants to scuba and snorkel sites on nearby reefs.
Key West Marine Park (tel. 305/294-3100), the newest dive park along the island's Atlantic shore, incorporates no-motor "swim-only" lanes marked by buoys, providing swimmers and snorkelers with a safe way to explore the waters around Key West. The park's boundaries stretch from the foot of Duval Street to Higgs Beach.
Wreck dives and night dives are two of the special offerings of Lost Reef Adventures, 261 Margaret St. (tel. 800/952-2749 or 305/296-9737). Regularly scheduled runs and private charters can be arranged. Phone for departure information.
Also see Mosquito Coast Outfitters.
