Mosquito Bay (Vieques) Tours
Brightest BayExperience the Guinness World Record holder for the brightest bioluminescent bay in the world. Clear bottom kayak options available!
Puerto Rico Bio Bay Planner
The magical bioluminescence in Mosquito Bay and Laguna Grande is best seen on the darkest nights. Use our interactive lunar calendar to guarantee a glowing experience.
☁️ How Weather Impacts the Glow
Bioluminescence is created by microscopic dinoflagellates that glow when agitated. Here is how the sky above affects the water below:
☁️ Clouds are your friend!
On nights with a bright moon, a thick cloud cover blocks the moonlight, turning a "Bad" night into a fantastic, dark viewing experience.
🌧️ Light Rain is magical.
Every single raindrop that hits the water makes the bay light up like a starry sky. (Note: heavy downpours will cancel tours for safety).
Lunar Visibility Legend
Prime Glow (Darkest)
Great Visibility
Partial Visibility
Poor (Bright Moon)
Changing: Prime/Great
Changing: Great/Partial
Changing: Partial/Poor
🌑
New Moon🌕
Full Moon
🌤️ Evening Forecast
Icons (✨ Clear, ☁️ Clouds, 🌧️ Rain, ⛈️ Storms) will automatically appear on the calendar displaying the evening tour weather (5 PM - 11 PM) for the upcoming 5 days.
Click any day to see exact times and book!
2026
⛴️ Planning to visit Mosquito Bay?
Mosquito Bay is located on the island of Vieques. Ferry tickets from the mainland (Ceiba) are notorious for selling out weeks in advance and are released with no set schedule.
Don't miss your glowing tour because you couldn't get a boat ride!
Book Your Glowing Adventure
Ready to experience the magic? We partner with the most reputable, eco-friendly tour guides in Puerto Rico. Secure your spot on the darkest nights before they sell out.
Laguna Grande (Fajardo)
Mainland AccessConveniently located on the main island. Paddle through stunning mangrove channels before opening up into the glowing lagoon.