Costa Rica offers some of the most exciting scuba diving in Central America, with options ranging from beginner-friendly sites to world-class advanced destinations. The Pacific coast is the main hub, with visibility that usually ranges from 20 to 100 feet. Every region has its own highlights, so instead of one “best” place, divers can choose based on the experience they’re after.

The Catalina Islands off Tamarindo and Flamingo are famous for manta rays, stingrays, and vibrant schools of fish, while Playas del Coco and the Papagayo Gulf feature more than 20 sites within a short boat ride, including the Bat Islands, where experienced divers can encounter bull sharks. Further south, Caño Island near Uvita is considered one of Costa Rica’s top diving spots, with excellent visibility, healthy coral, and marine life ranging from reef fish and turtles to dolphins and, at times, even whales.

For advanced divers, Cocos Island is the crown jewel. This remote UNESCO World Heritage Site requires a liveaboard trip but rewards travelers with some of the most extraordinary diving on Earth. Hammerheads, whale sharks, rays, dolphins, and massive schools of fish make it a bucket-list destination.

Tours are available year-round, though August through December usually brings calmer seas. Beginners can get certified locally, and many operators combine diving with snorkeling trips for mixed groups. Whether you’re looking for your first open water dive or a once-in-a-lifetime expedition, Costa Rica’s variety of underwater experiences makes it an unforgettable place to explore the ocean.