Viewing advice
Brightness drops sharply around the full moon; aim for the week on either side of the new moon.
Mosquito Bay Bioluminescence is a year-round natural experience. Best on moonless nights.
Dense dinoflagellates make Mosquito Bay on Vieques the brightest bioluminescent bay ever measured. It glows all year, but you need a dark, moonless night to see it at its most vivid, so plan around the new moon.
Where to see it
These are the spots that catch it best. Tap one to see what's worth a trip nearby.