Why Choose Us? The Difference is Clear!

The best bioluminescent light show is beneath your transparent kayak as you are engulfed in millions of light-emitting organisms! Other kayak styles just give you a limited view over the sides or a small window to witness this wonder of nature. Don’t believe us? Check out our kayaks compared to those of our competitors!

hobie-kayak

Competitor Hobie Mirage Pedal Kayak

competitor's glass bottom kayak

Competitor Glass Bottom Kayak

A Sea Thru Kayak on the shore

Our Sea Thru Kayak

About Sea Thru Kayaks VI


Sea Thru Kayaks VI offers nighttime guided kayak tours of the bioluminescent bay on St. Croix in the US Virgin Islands. Our tours launch from Salt River Marina at nightfall and utilize fully transparent “sea thru” kayaks to provide each guest with a uniquely unobstructed view of the waters around them, allowing each kayak to become fully immersed in the glowing bioluminescent wonder!

Come see for yourself why Sea Thru Kayaks is the only way to fully immerse yourself in the wonders of the water below. After a trip with Sea Thru Kayaks VI, you’ll see St. Croix in a different light!

about-us

Read Our Glowing TripAdvisor Reviews!

TA certificate of excellence Excellent!

If you want to see bioluminescent, this is the only way to do it! The clear kayaks were amazing to see the bubbles go under you! Once you get to the bay they let you go on your own for 45 minutes of adventure! It was so incredible and worth it!

– Christine J., TripAdvisor
TA certificate of excellence Fun experience!

Safety is their theme and making sure you have a phenomenal experience. They achieve both of those with high marks! The talks from the guide were amazing about why the bioluminescence is and how it works. She then is great about encouraging groups to paddle around to explore the bay and see to lights. I highly recommend it!!

– Patrick L., TripAdvisor
TA certificate of excellence Amazing tour!

What an incredibly cool experience! Top notch service from our awesome guides that made us feel welcomed and safe, before and during the amazing journey! Make the time during your visit to the area to experience this true wonder of nature. It's worth your time, energy and money. Enjoy!

– Jerry B., TripAdvisor
TA certificate of excellence Great experience!

I had a great time on the tour and Michelle was a wonderful tour guide. Craig and Michelle were professional and helpful and cared very much for the guests safety, as well as protecting the habitat we were in. Seeing the bioluminescence was really amazing, and the kayaking at night was fun in of itself. I am looking forward to going again!

– Stacey G., TripAdvisor
TA certificate of excellence Wonderful experience!

This was a great experience!! The highlight was holding a glowing jellyfish in my hand. I'd recommend scheduling the event at a new moon so it is as dark as possible to maximize the effect of the bioluminescence.

– Jeff Z., TripAdvisor
TA certificate of excellence Totally amazing

Could not recommend this more. It was nerve racking, a little scary, exhilarating and beautiful all at the same time. Michelle and Anthony were very knowledgeable and helpful. If you want a wonderful experience to see the bioluminescence in the best way with clear kayaks, go to no other!

– Jennifer J., TripAdvisor
TA certificate of excellence Amazing experience!

This tour was truly amazing. The bioluminescence was so bright and seeing it under the kayak as you paddle was beautiful. I had seen it before while diving but it was hard to describe to my husband who doesn't dive. This was all I needed. They people are very professional and truly love their jobs. 1 out of 7 bays in the world that glows....6 more to go on our bucket list!

– Jill B., TripAdvisor
bioluminescent algae in the pitch black

What is Bioluminescence?


Bioluminescence is the emission of light created by a living organism. In the Salt River Bio Bay, you will experience the light-emitting phenomenon of the single-celled microorganisms called dinoflagellates. As the water is agitated by the passing of your transparent kayak, it will seem as if your entire boat is engulfed in a light glow, or depending on the conditions, a cloud of pixy dust, or a starry galaxy racing beneath you!