Ask Jeanette Auber, owner of boutique Kauai dive shop Fathom Five Divers, what scuba diving means to her, and you’ll have an idea about the experience that awaits you as a diver when you head out to explore some of the most spectacular underwater sights in all of Hawaii with the Fathom Five team. Kauai, which is the northernmost island in the Hawaiian archipelago, is nicknamed “the Garden Island.” A drone’s-eye view reveals why: This postcard-pretty island is draped in emerald rainforest and valleys and surrounded by the brilliantly blue water of the central Pacific Ocean. Like its topside scenery, Kauai’s dramatic and lush underwater topography has been forged by Hawaii’s volcanic history.