La Bahia Fosforescente

La Bahia Fosforescente is a glowing bay off the coast of Vieques where millions of tiny organisms make the water light up at night. The water holds an incredibly high concentration of these microorganisms, which flash with blue light whenever the water moves or is disturbed.

The bay was saved through environmental protection efforts decades ago after pollution nearly destroyed the bioluminescence. Today it stands as one of the brightest examples of this natural phenomenon anywhere on Earth.

The bay holds importance for the local community as a natural wonder that draws people from around the world to experience something found nowhere else. Protecting it has become a shared responsibility, with locals taking pride in keeping this rare ecosystem intact.

Tours work best at night when darkness allows the glow to show clearly, and licensed operators use electric boats or kayaks to avoid disturbing the organisms. Book ahead with local guides who know when conditions are ideal for viewing.

The organisms that create the glow are called dinoflagellates, and they are extremely sensitive to even tiny amounts of pollution or light. The bay's isolation has allowed these creatures to thrive in numbers rarely seen anywhere else in the world.

Address: La Bahia Fosforescente, 00667, Puerto Rico

GPS coordinates: 17.96491,-66.99582

Latest update: December 6, 2025 19:09