If you're a certified scuba diver, explore what lies beneath Oahu's turquoise waters on this diving adventure! Enjoy the scenic ride on the dive boat before you head underwater. Visit a sunken fighter plane, a sunken barge, a sea cave, Turtle Canyons, Koko Crater and coral reefs. Use of all diving equipment, including two tanks of air, is included on this 4.5-hour Hawaiian excursion. Note: This tour is for certified divers only.