Captain Cook Monument Snorkel Trail
A challenging but rewarding 3.5-mile round trip hike down (and back up) a steep trail to the Captain Cook Monument at the edge of Kealakekua Bay. The payoff is some of the best shore-access snorkeling in Hawaii in a marine sanctuary with spinner dolphins, tropical fish, and pristine coral. The hike down through dry scrubland drops about 1400 feet. The climb back up in the heat is the hard part so bring extra water. For families with fit older kids who can handle the physical demands, the snorkeling at the bottom is genuinely world-class.