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La Parguera Sandbars & Biobay: Swim in Unique Waters
4.9
299 Ratings
Lajas
You’ll be exploring two distinctive locations - the sandbars at La Parguera and one out of the five global Biobays, which also happens to be the only one where swimming is permitted. You’ll be accommodated on splendid boats and navigated by an adept Captain.
You’ll be exploring two distinctive locations - the sandbars at La Parguera and one out of the five global Biobays, which also happens to be the only one where swimming is permitted. You’ll be accommodated on splendid boats and navigated by an adept Captain.
Duration:
2 hours
Cancellation:
24 hours
Highlights
- Parguera Water Sports Adventures & Bioluminescent Bay Tour Boat-Kayak-Swim - We will leave 1/2 hour before sunset to a sandbar where you will swim and watch the Sunset. After saying goodbye to Mr Sun we will head to the Biobay where you will swim and play with the pixie dust (bioluminiscense)for 30 minutes.. After that we will head back to the…
- Parguera Water Sports Adventures & Bioluminescent Bay Tour Boat-Kayak-Swim - We will leave 1/2 hour before sunset to a sandbar where you will swim and watch the Sunset. After saying goodbye to Mr Sun we will head to the Biobay where you will swim and play with the pixie dust (bioluminiscense)for 30 minutes.. After that we will head back to the dock. During high demand season we will offer a late night tour just including the Biobay. No Sunset.

What's Included
- Floaties included
- Floaties included
What's Not Included
- Towels , snorkeling gear
- Towels , snorkeling gear
Location
Mareaito Charters L.L.C.
Carretera 304
In front of La Casita Sea Food. Look for Mareaito Charters on Google maps.
If Downtown is closed go around through calle 1
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
For a full refund, cancel at least 24 hours before the scheduled departure time.
Customer Ratings
4.9
(299 Ratings)
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32jaredn
Feb 9, 2026
Top-two life experience - We did the nighttime bioluminescent swim. I can only describe it as a literal top-two life experience, up there with my wedding day. This is the sort of activity you should plan your whole vacation around.
Water was warm, boat ride was smooth, the tour guides were friendly and knowledgeable, and obviously the bioluminescent plankton were the coolest things I’ve ever seen.
Review provided by Tripadvisor
Samanthah431
Feb 6, 2026
Amazing Experience! - If in doubt, book this trip! It’s a sunset cruise, snorkeling, and most of all, an amazing experience swimming in a bioluminescent bay. Our captain and guide did an excellent job. I definitely recommend them.
Review provided by Tripadvisor
Luke_w
Jan 24, 2026
Once in a lifetime experience - This experience was one for the books, the staff was amazing, knowledgeable, and really fun!!
The bio luminescence, swimming in it is a once in a life time experience 10/10 recommend.
Review provided by Viator
Valerie
Jan 24, 2026
Great people and amazing nature - The tour operators are so helpful and the nicest people. The bay is a wonder to behold. Swimming at night in this bay was amazing and fun. Highly recommend
Review provided by Tripadvisor
Valerie_b
Jan 24, 2026
Nicest people and amazing nature - Totally worth the drive from San Juan!!! The tour operators were so accommodating of our unexpected small problem and made sure we got the wonderful experience we expected. Can’t say enough good things about them and the natural wonder that bioluminescence is!
Review provided by Viator
Laurie_l
Jan 24, 2026
Bio bay swimming - Loved being able to swim in the bioluminescence bay. Such a neat experience. Snorkeling/swimming around the little island before enjoying the sunset was neat. Would have been better with cocktails 😉
Review provided by Viator
Getaway295464
Jan 22, 2026
Amazing time in the Bio Bay - I had a wonderful time on this tour. Captain Ryan was our guide; he was really kind, knowledgeable and patient, and helped me put my snorkel mask together! The experience of swimming and snorkeling in the Bio Bay was incredible. You see “fairy dust” as you swim through the water. It was my favorite activity that I did in Puerto Rico! It was a great activity for a solo traveler too; I met a really nice group of people from Maryland and Minnesota and we bonded during the experience! I highly recommend this tour! 😊
Review provided by Tripadvisor
Charles
Jan 20, 2026
Once in a lifetime chance - Ryan and Isis were great, friendly and informative. The hosts at some functions, in my opinion, can become rigid or impersonal after helping customers or tourists repeatedly through time. These two were friendly, informative, and emanated a positive, helpful, yet chill vibe. They were the perfect hosts for a spectacular, one of a kind boat ride through the night - on a calm clear night, the day after the new moon - to an exotic bay where we night swam in warmer-than-average water as dinoflagellates luminesced around us like in a scene from Avatar. Of course I recommend it.
Review provided by Tripadvisor
199kathleenk
Jan 19, 2026
Magical! - We had a great time on this tour! Ryan was a great guide, he even got 2 non swimmers in the water, and we are so glad we did! The sunset was beautiful and the bio swim was an amazing, magical experience! A highlight of our trip!
Review provided by Tripadvisor
722weiz
Jan 19, 2026
Swimming with the Dinoflagellates - One of our most memorable experiences during our vacation trip to Cabo Rojo. They will take you on boat for the first half to Caracoles Cay and then the second half is in the Biobay. This way you will enjoy the sunset light and then the biobay light. The water lights up as it gets darker and it was so fun to swim in the water under all the stars. Our tour guide (forgot her name but she was a young lady with curly hair) and captain were also super friendly and awesome!
Review provided by Tripadvisor