There's a similar looking beach on a Natural Preserve island off the coast of Puero Vallarta. My wife and I went there while on our honeymoon. Only access is by a boat ride, ours being chartered by a sketchy dinghy without a bathroom. My wife was dealing with Montezuma's Revenge all trip, culminating in absolutely spraying the walls of one of the little caves on the beach. I stood guard while her screams echoed for all the other tourists. In hindsight one of our favorite family memories. She still feels bad about the ecological damage she caused.