This is my favorite Big Island spot. Really breathtaking with lots of species of fish, corals and plants due to the several depths you can enter. I like it best early in the AM as you can get good sunlight, and also because it can get crowded later in the day. Visibility is almost always great; I am guessing I could see 100 ft. We enjoyed snorkeling above divers in very deep water and still seeing them below--and the schools of dolphins seemed to be teasing them by swimming above them undetected. Turtles were everywhere as well…but the spinner dolphins were the stars- so many schooling and playing around us one day you just lose count . Very special place. We stayed at the Manago Hotel in Capt Cook as a base camp, and it was a good choice because we wanted to return several times while on the Big Island.