Depth 40-60 ft./ 16-20 m. Boat dive. Kewalo pipe is usually the second dive after one of the wreck dives in Waikiki. The pipe extends 1/3 of a mile from shore where they used it as a water drainage. The pipe is not active anymore and reef grew around it bringing all sorts of marine life, including the hard to see Frog Fish and multiple scorpion leaf fish. Visibility 40-100 ft. / 13-35 m.