Bio Bay Travel Guides
Everything you need to plan your visit to Puerto Rico's three bioluminescent bays — how to get there, what to expect, and how to choose the right one for you.
Mosquito Bay, Vieques
Guinness World Record holder for the brightest bioluminescent bay in the world. Requires a ferry or flight to reach the island of Vieques.
- How to get to Vieques (ferry & flights)
- Kayak vs. electric boat tours
- Conservation rules and what to pack
Laguna Grande, Fajardo
The most accessible bio bay from San Juan. Paddle through beautiful mangrove channels into a glowing lagoon — just an hour's drive from the capital.
- Getting there from San Juan
- The mangrove kayak experience
- Nearby attractions in Fajardo
La Parguera, Lajas
The only bioluminescent bay in Puerto Rico where swimming is legally permitted. Jump in and experience the glow with your whole body.
- The swimming experience
- Getting to the southwest coast
- Nearby beaches and attractions
Find Accommodation
Search for vacation rentals near Puerto Rico's bioluminescent bays.
Find the Best Night for Your Visit
Our lunar calendar shows you exactly which nights will give the brightest bioluminescent glow, plus a 16-day weather forecast for each bay.
Open the Lunar Calendar