I loved that we were able to board the catamaran from Waikiki beach. The staff were lovely, and they made sure we were well informed and had all the necessary equipment. The snorkel gear was of high quality and super clear. Turtle canyon itself is gorgeous - even on a choppy day, the visibility was super impressive. The variety of fish and things we saw was superb for being such a small area - I saw small and large garfish, an eel, a moray stingray, turtles, and so many varieties of fish. I would highly recommend this activity and group for anyone visiting Oahu.