"Trips to this outer-reef site include snorkeling from a submerged platform with toddler-sized masks available, plus a viewing platform and an underwater observatory for glass-bottom viewing; the same operators additionally put a submarine into the reef's lagoons for extra observation options." - Alison Fox Alison Fox Alison Fox is a Travel + Leisure contributor. She has also written for Parents.com, The Wall Street Journal, and amNewYork. When she’s not in New York City, she can be found at the beach or on the slopes. Travel + Leisure Editorial Guidelines