The heart of Playa de Joyuda's 300-acre Reserva Natural Laguna de Joyuda is a sizeable saltwater lagoon with a depth that rarely exceeds 4ft. The sanctuary is of great importance to waterfowl and other migratory birds that come here to prey on more than 40 species of fish. Humans come here for the same reason.
The reserve is also home to one of Puerto Rico’s famous bioluminescent bodies of water, like those in La Parguera and Vieques, but is free of commercial tourism. After dark, microorganisms give the dark water a green glow. Travelers with access to a kayak can launch a nighttime exploration of the lagoon; watch for the access road off Hwy 102 near Parador Perichi’s.
Adventures Tourmarine is the outfit to ask about renting kayaks to go out on the laguna (around US$45 for the day).