The logo for Divers Unlimited is a dolphin holding a diploma in its fin. That explains exactly what you need to know about this dive shop, located on Pines Boulevard, just west of the Hollywood border. In addition to being one of the largest and most comprehensive dive shops in South Florida -- with row after row of wet suits, buoyancy-control devices, fins and masks, and even underwater cameras -- Divers Unlimited offers regular weekday and weekend PADI (Professional Association of Dive Instructors) certification courses, starting at $250. The course includes two days' worth of diving and ocean training as a scuba diver. If you're a South Florida resident with a sense of adventure, you're missing out if you're not already a certified diver. Thanks to the roaring Florida Straights acting as a constant cleaner, the reefs of Broward and Palm Beach counties are some of the most beautiful in the world.