Fly to the Bay Islands and you’ll likely trade dive tales with a seatmate before take-off. Here, scuba is affordable — and tourism’s biggest draw. Most dive shops have perfected the art of keeping groups on schedule in the morning, then letting individuals choose their own adventures come afternoon. If you’re looking to fill a logbook, check to see if your resort has a house reef (many do). Topography ranges from sheer walls to gradually sloping drop-offs, but no matter what, inclines are noticeable enough to simplify navigation.