Bottom Time: 20-30 Minutes
Visibility: 100 feet
Sealife: Crabs, Nocturnal Fish, Lobster, Octopus, Moray Eels, Turtles, Manta Rays, White Tip Reef Sharks, Tuna, Amberjacks
Just around the corner from Diamond Head, 100 Foot Hole is an ancient Hawaiian Fishing Ground that was accessible only to the ali'i (ruling class). Although this hole is only 70-90 feet deep, it got its name from fishermen, who, after being asked how deep it was, answered "it's about a hundred feet". The name has therefore stuck !
The site is constructed from a cluster of volcanic rocks tumbled together to form ledges, caves and one large open-ended cavern. One formation, encrusted with cauliflower coral, houses the main tunnel. Within that tube lies an obstructing rock that can easily be traversed.
Boats tie off to a naturally formed lava anchorage in 75 feet, just south of the focal boat of the dive. Bring a light to view the bountiful marine life inside the cave.