PITI, Guam — Wetsuit and flippers on, oxygen tank strapped to my back, I steadied myself for the underwater descent. "Look below you," my scuba diving teacher said. "There are some fish right there." ...

Hawksbill turtle and school of grunts over a coral reef in Cozumel, Mexico. Scuba divers always talk to each other about their favorite dive sites. Egypt? Maldives? French Polynesia? Yes, those ...

Miami-Dade County bills itself as the wreck-reational diving capital of the world, thanks to more than 100 artificial reefs sunk in local waters over the past 25 years to attract both fish and divers.