Bioluminescent Bays
A quick Google search will tell you that there are only five bioluminescent bays in the world and that Puerto Rico has three of them. As far as I can tell, this may be true as long as: The body of water must be a bay, and it must be bioluminescent year-round. I have been to all three locations in Puerto Rico. Two are located on the exact opposite sides of the island – one in the southwest corner, the other in the northeast. The other is on the south side of Vieques Island.
The single most important part of making your visit a great experience is when you go. Check the moon chart online. The fuller the moon gets, the less worth it it is to go. Going on or near the new moon is your best bet. Also, going before moonrise can be a factor worth considering. Swimming in the water is prohibited in all three bays. Sunscreen and bug repellant are especially damaging to the microorganisms that create the bioluminescence.
Mosquito Bay is often considered the crown jewel of Puerto Rico’s bioluminescent bays. I agree that it is brightest, but not much brighter than Laguna Grande. To get here you’ll need to take a ferry to Vieques and join a tour. Both should be organized in advance. To get here without a tour, get a kayak, rent a UTV, drive it down a bad dirt road, and park here. You’ll have to wade through some gross mud to get to the water. I’ll always remember paddling through the dark water, watching fish light up beneath me, outlined perfectly in greenish light as they swam away from my board. The bioluminescence outlined the marine life so perfectly, that I instantly recognized a nurse shark when it swam away a few feet from me.
To get to this bioluminescent bay in Fajardo, park here. There are many places to rent kayaks and join a tour group. I made it there on my paddleboard without too much trouble. You’ll need to paddle down a long channel that winds through the mangroves. I had a great time navigating the dark channel. We were rammed once by a kayaker in a tour group. The channel is very dark so you’ll need a light if you are by yourself. A headlamp is ideal. As the name suggests the bay is big, but there are buildings on a hill nearby with bright lights so you can see well and easily find the channel when you are ready to return. The bioluminescence is bright, a pale greenish color. Some areas are brighter than others. Watching the water light up with every paddle stroke is an unforgettable sight.
The bay is located in Lajas, in the Parguera Natural Reserve. I don’t have a photo of the bay as I have only visited at night. Park here, the ticket booths are nearby. Unlike the other two bio bays, for this one, you must take a motorized boat into the bay. When you arrive, a local kid requesting tips will hop into the water and swim around to show you the bioluminescence. To be fair, I have only visited once and the moon was fairly bright, but this one is my least favorite. I prefer to be paddling on the water instead of watching someone swim.
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