You can dive with nearly any operation in Key West and as long as you stick to the reef sites, you won’t exceed 60’. Most operators run schedules to both the reef and wreck sites, and some specialize more in the wrecks - Because they’re bigger attractions. Pennekamp is way up in Key Largo If you’re staying in Key West, don’t bother with that long drive unless conditions warrant it. Just off Big Pine Key there is the Looe Key Reef, which is a GREAT shallow site with spur-and-groove as well as patch reef formations, and generally good visibility. Looe Key Resort runs dives to there almost daily, as well as Strike Zone Charters.