Shark Cage Dive

Oahu shark dives operate over the deep-water 'shark grounds' three nautical miles off Haleiwa Harbor on the North Shore, where decades of long-line fishing left a resident population of Galapagos sharks (8 to 10 feet, the dominant species) and sandbar sharks (6 to 7 feet, more numerous). Federal regulations in Hawaii prohibit chumming the water, so the sharks are attracted by engine vibration and the boats' fishing-area associations rather than blood — the result is calmer, more curious animal behavior than the frenzy footage from South Africa or Mexico. Trips run two hours total: 25 minutes to the site, 60 minutes in the water (cage or free), 25 minutes back. Tours go year-round with cancellation rates under 5 percent.