For snorkeling, whale-watching and diving, this outfit offers almost daily tours at decent prices. While Kailua-Kona is the Big Island's hub for snorkeling and scuba diving, the waters off Mauna Lani are excellent and much less crowded. Also has a beach center that offers outrigger lessons ($150 for 90 minutes), surf lessons ($99) and SUP rental (30 minutes/one hour $30/50).