Grand Cayman Bioluminescent Bay Adventure
Overview
Available languages
3 hours
Mobile ticket
Discover the enchanting magic of Grand Cayman's Bioluminescent Bay, where millions of glowing plankton illuminate the water under the night sky. This unique boat tour invites you to witness this mesmerizing natural light show, guided by local experts who reveal the secrets behind the glowing waters.
Your adventure begins at Starfish Point, where you'll encounter the intriguing upside-down jellyfish and take in the serene beauty of the beach. Next, experience the wonder of Bio Bay, where you can admire the glowing waters from the boat or opt for an unforgettable swim, immersing yourself in this rare phenomenon up close.
This captivating tour is perfect for nature lovers and adventurers alike—a must-see highlight of Grand Cayman that promises memories to last a lifetime!
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 poor cardiovascular health
Suitable for all physical fitness levels
Flotation devices for children under age 3 are not available
The total tour time includes the travel time, with the actual Bioluminescence Tour being 2 hours from dock to dock.
Travelers must bring their own towel
Experience the Wonder: Please note that the bioluminescent display is a natural phenomenon, and its intensity can vary nightly. We appreciate your understanding as you witness this breathtaking spectacle in its unique form.
Visual Variability: Images are for illustrative purposes only; the actual experience may differ based on the enchanting nature of bioluminescence.
Transfer service is available exclusively for accommodations located in the Seven Mile Beach area.
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What To Expect
Starfish Point
Start your adventure with a scenic 40-minute drive to the stunning East End, soaking in breathtaking island views along the way. Your first stop? The serene Starfish Point, a hidden gem where you’ll learn about the captivating upside-down jellyfish and take in the beauty of the island as the sun sets. But the magic doesn’t stop there—next, we head to Bio Bay for an unforgettable encounter with bioluminescent waters. Watch as the sea glows with natural light, offering you the perfect moment for awe-inspiring photos.
Bioluminescent Bay
Discover the hidden gem of Grand Cayman in the serene Cayman Kai—a mesmerizing bioluminescent bay that comes to life at night. Under the guidance of local experts, you'll experience a magical swim surrounded by millions of glowing plankton, lighting up the water with every movement. After an incredible bioluminescent experience, we'll take you back to your accommodation. Get ready to relax, enjoy the ride and share your moments together on the way back! Escape the crowds and immerse yourself in this unforgettable, one-of-a-kind boat adventure!
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
Transfer service is available exclusively for accommodations located in the Seven Mile Beach area.
Pickup points
Select a pickup point
Options
Grand Cayman Bioluminescent Bay Adventure
Pickup included
Reviews
29 reviews
Total reviews and rating from Viator & Tripadvisor
POOR Communication
Mike T,,Jan 2, 2026
- Review from Viator
1.00The tour company failed to provide any details on when they would pick us up and the communication was terrible. As a result we didn’t go. There was no phone number provided and nobody at the Marriott had any information on them so there was no was to get in touch with them.
The operator did not...
Ryan K,,Dec 23, 2025
- Review from Viator
3.00The operator did not communicate the pick up place clearly or ask where we were staying to get it right. The guides were friendly if not factually accurate about the starfish and jellies. Pretty sure several starfish will die after how they were handled which is very sad. It was also very overbooked for a small tour. The boat was so crowded it was hard to hear and move in and out of the boat. Total time was short at about 90 minutes start to finish. Loved seeing the plankton as it was a truly unique experience.
Do not book. They don't stand behind their bookings
Orly L,,Nov 24, 2025
- Review from Viator
1.00This felt like a booking trap. We were allowed to book when seats didn't exist and were only informed six hours prior, when it was too late to book with a different vendor.
Magical Experience
Daniel K,,Oct 28, 2025
- Review from Viator
5.00The tour is an amazing experience and the operators are first class. Our guides were professional, experienced, engaged, and really took care of us. I don't recommend taking the tour in October as the increased rain resulted in a multitude of mosquitos. The guides did their best, but my wife ended up with 80 bites (we counted) so bug repellent is a must in the fall.
amazing experience!
will b,,Sep 23, 2025
- Review from Viator
5.00excellent experience! bring mosquito repellent! holding starfish then swimming in the bioluminescent bay? core life memory.
Unbelievable!
Robert M,,Sep 14, 2025
- Review from Viator
5.00What a great experience. Never seen anything like this and would say it’s definitely one of the wonders of the world. The staff were outstanding and not only did they answer everyone’s questions but made the trip extremely fun. Thanks!
Don't waste your money.
Mobile620096,,Sep 10, 2025
- Review from Tripadvisor
2.00We were very disappointed. If you think you might see what is depicted even a little bit while on the excursion... You will be very disappointed. Plus, they don't tell you that the whole area is infested with mosquitoes. This is the biggest waste of money. Look at the photos instead of spending over $150 and getting bombarded with mosquito bites.
Great excursion
AngelaB670,,Aug 20, 2025
- Review from Tripadvisor
5.00This was a very cool excursion. The crew was awesome definitely enjoyed. The boat was nice and very clean. The boat ride was very smooth.
Very informative and...
Steve M,,Aug 16, 2025
- Review from Viator
5.00Very informative and enjoyed the experience …. the guides were great and made the trip fun for the entire group
Great time!
Thereza R,,Aug 4, 2025
- Review from Viator
4.00Sugar Sugar Bear and his crew were very helpful and funny. They really made the evening enjoyable! Really enjoyed the experience! Take bug spray. We got eaten alive at starfish point, but it was really cool seeing the starfish. As for the bioluminescence, make sure you go on a new moon to really see the bioluminecence at its best.
From US$149.00
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Operated by Cruise Port Adventures