An easily accessible spot with interesting topography and a decently healthy reef. Dove here in March on a day when there was very little surf. Entry and exit are easy IF it's calm, but would be rough if there was any surf to speak of. We chatted with a local diver there who told us he had once gone in with no surf at all, then come back to find 5 ft surf that forced him to swim up to adjacent Magic Sands Beach to exit. It's the ocean... respect it and don't try this one if it's not calm. Once in the water we headed left, exploring around the lava fingers along the way. Some people here have been calling these lava tubes but they are more like little canyons. This is fairly shallow, around 30 feet or less. We did follow the reef further out to about 50 feet at one point. The coral is pretty bleached in spots but there are healthy areas too. We saw many small reef fish (the usual suspects such as tangs, parrots, and wrasse) as well as a dragon wrasse and a puffer. The visibility was not great for Kona- probably about 30 feet. Overall a fun dive although not spectacular.