To dive alongside North America’s solely coral barrier reef, all you must do is drive south of Miami to the Florida Keys and get within the water. Pop into one of the many dive outlets alongside the Overseas Highway and set out to discover nine shipwrecks along the Florida Keys Wreck Trek (don’t miss the wrecks of Spiegel Grove, Eagle, and Vandenberg). Miles and miles of superb coral reefs are home to everything from parrot fish, nurse sharks, and sea turtles to tarpon and barracuda. There are many skilled dive shops in these parts, but among the many greatest are…