A UNESCO World Heritage site, Guanacaste and the Bat Islands are set deep within Santa Rosa National Park. Liveaboard diving in the area offers bull sharks, humpback whales and lots of macro life.
The diving in this part of the Pacific is excellent, but don’t expect to see pristine corals. The underwater landscape is defined by volcanic formations such as arches, caverns and tunnels. What the area lacks in coral, it makes up for in pelagic species, the main scuba attraction in Guanacaste. The Bat Islands attract large groups of Bull Sharks, creating an adrenalin-filled dive. The shark dive reaches 100 ft (30m) with current, so this liveaboard itinerary is best for advanced divers. While you can dive this part of Costa Rica from land, you’ll get more time in the water on a liveaboard. Typical cruises last 6 to 7 nights, and the best time to dive Guanacaste is from May to November.