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2 hours
Mobile ticket
You will visit two very unique places the sandbars of La Parguera and one of the five Biobays in the world and the only one you can swim in. Very nice boats and skillful Captain.
Service animals allowed
Not recommended for travelers with poor cardiovascular health
Travelers should have at least a moderate level of physical fitness
For a full refund, cancel at least 24 hours before the scheduled departure time.
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.
Floaties
Towels , snorkeling gear
309 reviews
Total reviews and rating from Viator & Tripadvisor
E2778QVjeffp,Apr 22, 2026
- Review from Tripadvisor
Great tour. Really nice hosts who were great with our family. Thanks!
Gina C,Apr 21, 2026
- Review from Viator
Ryan and Luis were great! Very informative and this excursion was the highlight of our trip. Highly recommend this experience for everyone!
stevenmL925DW,Apr 17, 2026
- Review from Tripadvisor
We had a great experience. Addy and Fiol were both great.
Ariel V,Apr 17, 2026
- Review from Viator
(Prefiero notar mis experiencias y opiniones en inglés. ¡Grácias a Adriana y Fiol! Saludos desde Caguas y Baltimore!) I’ve been overdue for a trip to Puerto Rico for many years, and especially given that my wife has never been here. I wanted to show her some of the natural wonders of where I came from. Neither of us has been to a bioluminescent bay. Well, at least I don’t remember seeing one when my parents would visit Fajardo. Adriana and Fiol were warm and friendly tour guides and it’s obvious they could navigate La Parguera in their sleep. I recommend them highly and the charter they work for. Their familiarity with the water made it a comfortable and safe ride. And just remember to stay on “island time.” It might take a while to get out there, but things have to be in order before setting off. Our first stop was near Cayo Caracoles (Snail Key) for a dip on warm meter-deep water, as we waited for the sun to set. Meanwhile, Fiol messed around with some in our group by feeding a small group of tarpon hanging out near all the tour boats also stopped nearby. :) It wasn’t as dark out as we had hoped, but that’s beyond anyone’s control. There wasn’t a new moon and it had rained recently, so not all the plankton were on the surface, but still, my wife and I saw how the water sparkled as we got to swim and float in the bay. If we kicked our legs or used our arms to move around, we could see the glow around our limbs. We could also see the glow on any given boat’s wakes. It wasn’t as dramatic as we saw in YouTube videos, but that didn’t matter. It was all a sight to behold, and all under a star-filled sky. It was quite romantic. Aside from the moon’s (our) timing and a minor mishap with my wife (she’s ok), this was an experience neither of us will forget. And we got to experience something in my Puerto Rico together for the first time. ¡Muchas grácias por todo y hasta la próxima vez…!
331tamannah,Apr 14, 2026
- Review from Tripadvisor
It was a pretty good experience! I had booked with paradise scuba but they unfortunately cancelled all their tours because of thunderstorms in the evening. This company didn’t, so I booked them on TripAdvisor. I don’t swim well so I did request a life vest before we boarded the boat, so I would recommend you do the same if needed (ask before you get on the boat). The captain (Fial) was very kind and provided me one as we boarded. We first went to a sand bar where the water was about up to my neck (I’m 5’1”) after all the rain this week and earlier in the day, and we fed some tarpons, which was neat. We then drove to the bio bay, and I got in the water. Because of the rain, it wasn’t as bright as it could be, but it was still great, watching the water light up like glitter with sparkles around my hands. They gave a pool noodle as well to use under your arms and I had the life vest on for extra security and both kept me very buoyant so I wasn’t worried about drowning as much and could enjoy the dinoflagellates. The waters were relatively calm. There was thunder and lightning in the distance during the whole experience so our group didn’t stay in the water too long. The water wasn’t too cold. Definitely bring a large towel to wrap around you for the trip back. Overall, it was a good experience. I would go again and recommend this company.
colleensF6517WA,Apr 14, 2026
- Review from Tripadvisor
We booked with Mareaito last minute & due to availability, but next time it will be quite intentional. Jesus was a great captain, fun & full of knowledge. Our family had a great experience. We drove from Luquillo so that we could have the swim experience & it was well worth the drive!



taramJ7898JG,Apr 14, 2026
- Review from Tripadvisor
Amazing experience. It’s one of the best nature experiences I have encountered. It’s just shows how awesome the earth is and how we should do anything to protect it! The crew were knowledgable and very nice.
Veronica E,Apr 13, 2026
- Review from Viator
This was a unique and fun experience that should not be missed. My 9 year old son thought it was so cool. The water felt nice and the hosts were friendly and informative.
Maimona a,Apr 9, 2026
- Review from Viator
Ryan was our operator and he was fantastic. This was such a special experience for our family with two littles under 5. They enjoyed the water so much. It was warm and calm waters. Bioluminescent was nothing like the pictures, but magical nonetheless. Stay close to the boat for the darkest shadow if you’re on the sunset tour as it creates the best area for viewing. Bring goggles or a snorkel for maximized viewing. Highly recommend this company for families.

173beckar,Apr 8, 2026
- Review from Tripadvisor
This was a definite highlight of our trip! The staff were incredibly helpful, friendly, and knowledgeable about the bay. I would definitely do this again!
Operated by Mareaito Charters