Overview
Available languages
3 hours
Mobile ticket
Discover the enchanting Bioluminescent Bay of Grand Cayman, where millions of glowing plankton illuminate the water at night—an extraordinary sight unique to this Caribbean gem. Join our exclusive boat tour for an unforgettable evening, guided by local experts who share the secrets of this magical bay.
Your adventure includes two captivating stops: first, visit Starfish Point to learn about the intriguing upside-down jellyfish. Then, dive into the wonders of Bio Bay—admire the glow from the boat or take an optional swim for an up-close experience. This exceptional tour is a must-do for every Grand Cayman visitor!
Additional Info
Wheelchair accessible
Infants and small children can ride in a pram or stroller
Infants are required to sit on an adult’s lap
Not recommended for travelers with spinal injuries
Suitable for all physical fitness levels
Flotation devices for children under age 3 are not available
Total tour duration includes travel time, with the Bioluminescence Tour lasting approximately 2 hours from dock to dock.
Travelers must bring their own towel
Tour start times may vary seasonally to provide you with the best experience possible.
Each night, the natural wonder of bioluminescence shines with unique intensity, ensuring a spectacular visit every time.
Images are for illustration only; your experience may differ, highlighting the enchanting unpredictability of bioluminescence.
Tours are scheduled based on moon phases, so availability may fluctuate.
Roundtrip transportation is only included for hotels located along Seven Mile Beach.
What To Expect
Starfish Point
Experience the breathtaking beauty of starfish, shells, and vibrant marine life in their natural habitat. Immerse yourself in the Caribbean’s stunning underwater world while capturing incredible photos of these aquatic treasures.
Bioluminescent Bay
Experience the breathtaking bioluminescent bay at Cayman Kai, where the water sparkles under the night sky. Join our local guides for an unforgettable adventure as you paddle through shimmering waters, where every stroke creates a dazzling display of glowing plankton. This tour is a must-do on your Cayman Islands getaway! Capture the moment in the pristine waters and create memories that will last a lifetime!
Options
Grand Cayman Bioluminescent Bay Tour
Pickup included
What‘s Included
Water and fruit punch
Certified captain and crew
Snorkel set: Fins, snorkel and mask
Roundtrip Transportation from Seven Mile Beach hotels
Life vest
Entrance fee to the Marine Park of Cayman Islands
Air-conditioned vehicle
Snacks
Gratuities
Transportation outside the Seven Mile Beach area
Pickup points
Select a pickup point
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
Reviews
4 reviews
Total reviews and rating from Viator & Tripadvisor
Unforgettable family experience! Book this tour!
Madison F,Jan 13, 2026
- Review from Tripadvisor
5.00Captain Sugar Bear made us feel right at home. It’s clear this crew knows what they’re doing. Captain and First Mate Alex taught us about the sea life at night in a fun and interesting way. Our first stop was at Starfish point where we got to hold beautiful red starfish and touch a jellyfish! Sugar Bear and Alex were careful to make sure we understood how these animals interact with their environment and how to safely handle them. Next we hopped over to bioluminescence bay, which was amazing! You could see the glow behind the boat as it trolled into the bay. Once stopped we all hopped in and swam. Marcella was amazing, making sure everyone got photos. 10/10 tour!
These thieves agreed to...
Scott W,Jul 28, 2025
- Review from Viator
1.00These thieves agreed to pick us up at our Condo which Viator CONFIRMED! They did not pick us up. Instead they stole over $300, and refused to refund. That has cost Viator our future business, and likely legal action. DO NOT USE THIS PROVIDER. Viator should cancel relationships with them.
So much fun! Alex and...
Jennifer A,Jun 30, 2025
- Review from Viator
5.00So much fun! Alex and Jimbo were informative and made sure we maintained the integrity of the waters and marine life while teaching us as well.
Awesome once in a lifetime experience
chelseasA6101GR,Apr 4, 2025
- Review from Tripadvisor
5.00Such a cool experience looked like glitter under the water. They provide suits so you don't get stung. They give you noodles to help you float because they don't want your feet touching the ground because there's little jellyfish down there. The water is shallow about 4 or 5 ft
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Operated by Caribbean Cruise Tours