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Bioluminescent Bay (Mosquito Bay)
Bioluminescent Bay (Mosquito Bay)

Bioluminescent Bay (Mosquito Bay)

Puerto Mosquito, Vieques, Puerto Rico

The Basics

Any contact with the water—by the boat, a paddle, or a part of the body—makes the water glow bright neon blue and green. Jump in for a neon-lit swim, cruise over the water in a pontoon boat, or board a kayak to paddle through the bay. Nighttime kayak tours typically allow you to learn about the biology of dinoflagellates and their interaction with the Vieques ecosystem.

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Overnight Bio Bay Kayak Tour in Vieques Island
Overnight Bio Bay Kayak Tour in Vieques Island
$55.99 per adult
Traveler Favorite
All in all it was amazing to experience this natural wonder guided by Adel and the rest of the team!
Adel who was our Guide and the rest of the team were very courteous and efficient during the entire the trip. Adel was very informative and added humor to make the tour interesting.
Ramzan_L, Nov 2022

Recent reviews from experiences in Vieques

star-5
Fun experience during new moon
Hedley_P, Aug 2022
Bioluminescent Bay Kayak Trip from Vieques
Amazing bio-wonder with witty and knowledgeable guides. Small snafu with kayak, but guides were safety conscious and fellow visitors rolled with it - good to see in 2022! *Note: the water is only about 4” deep. Don’t worry too much about paddling out there in the night. PS TIP YOUR HARDWORKING GUIDES. :)
star-5
Great service
Ioannis_K, Dec 2022
Bioluminescent Bay Kayak Trip from Vieques
Ticket and Chris were great! they were very knowledgeable and personable. Even though it was a half moon they made the experience as best as it could be with supplementing with a tarp
star-5
Think Avatar when your in the Bay
Miguel_C, Dec 2022
Bioluminescent Bay Kayak Trip from Vieques
Chris and rocket our tour guides were simply amazing. Very informative. Went the extra mile. Great team.
star-4
Bio Bay with my boys
Mary_S, Oct 2022
Overnight Bio Bay Kayak Tour in Vieques Island
Our family of 6 had a great time. Adel is a great guide and made us all feel comfortable. The only improvement I could ask for is some sort of foot washing station at the end (even a detergent bottle filled with water would be great) to get the mud off. Thanks for a fun adventure!
star-5
Thumb up to clever Rock & Chris
Cui_L, Dec 2022
Bioluminescent Bay Kayak Trip from Vieques
It’s a fantastic night and trip. The luminescent bio bay is soooo amazing! Strongly recommend and thumbs up to Rock & Chris. They have very useful tricks to make the bio luminescent effect obvious even under moon light.
star-5
Best experience ever! The...
Ramon_M, Aug 2022
Overnight Bio Bay Kayak Tour in Vieques Island
Best experience ever! The glowing is very impressive, the night were so magical with the clear sky. The bio in Vieques is the best one to enjoy this natures gift
star-5
Great experience
RajKumar_T, Nov 2022
Bioluminescent Bay Kayak Trip from Vieques
It was a great experience. We were a small group for the kayaking, guides did a great job in explaining. Great guides.
star-5
It was amazing!
YasmarS_E, Nov 2022
Bioluminescent Bay Kayak Trip from Vieques
One of my favorite parts of the tour was “star gazing with Lulu” 😁 and listening to the information about they shared.
star-5
In the middle of the bay
bebrink, Nov 2022
Bioluminescent Bay Kayak Trip from Vieques
When we were in the middle of the bay and looking to the sky. It was a very exciting night. It was a great time
star-5
Magical
Brock_B, Aug 2022
Overnight Bio Bay Kayak Tour in Vieques Island
Exceeded my expectations. Staff was very friendly. The bioluminescence was absolutely stunning. Never seen anything like it
star-5
Incredible experience!
Jeremy_G, Nov 2022
Bioluminescent Bay Kayak Trip from Vieques
Had a great time. It had been rainy and the weather wasn't ideal, but the experience the tour guides offered more than made up for it. The colors were incredible, and the tour guides knew the best parts of the bay that lit up the most. If you're debating whether or not it's worth it, it absolutely is.
star-4
Kayaking with no moon
margaret_m, Aug 2022
Overnight Bio Bay Kayak Tour in Vieques Island
This was a very good trip that went seamlessly. My four star rating was based on lack of instructions on what we should have done if we got separated from the group. It was VERY dark
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Things to Know Before You Go

  • Nighttime tours require a stay overnight on Vieques Island; the tour company can typically provide recommendations for hotels or guest houses.

  • Be sure to apply bug repellent, as Mosquito Bay lives up to its name.

  • Mosquito Bay is the only bioluminescent bay in Puerto Rico where swimming is permitted.

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How to Get There

Mosquito Bay is located on the southern shore of Vieques, which can be reached by ferry from Fajardo on the main island of Puerto Rico. Reaching the bay is an adventure in itself that requires a 10-minute drive down a very bumpy and rutted 4WD track. Tours typically provide transportation to the bay from the town of Esperanza on Vieques Island.

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When to Get There

The dinoflagellates in Bioluminescent Bay are active year-round but are best seen during the new moon, when the sky is darkest and the water glows brighter by comparison. Tours typically do not operate the day before, during, and after the full moon, when the organisms are difficult to see.

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Must-See Vieques Attractions

Isla Vieques was under the control of the US Navy for 60 years and thus remains largely undeveloped. The small island is home to unspoiled rain forest dotted with pristine beaches and archaeological sites including the Hombre de Puerto Ferro, where skeletal remains up to 4,000 years old were discovered. Along with the famous bio bay, Vieques is host to some excellent snorkeling, especially at Blue Beach (Bahía de la Chiva).

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