Your tour will depart from Captain Marvin's dock, located at Raleigh Quay. Please be here 30 minutes before your trip time. Our driver, who will be wearing a polo shirt with our logo, will call out your name upon arrival. Please note that the driver can wait for a maximum of 5 minutes.
Description
Witness nature’s glow in Grand Cayman’s world-famous Bioluminescent Bay, where millions of microscopic plankton illuminate the water with every movement. This unforgettable evening boat tour invites you to swim among the stars—or simply enjoy the glowing display from the deck—as our expert local guides share the fascinating science and stories behind this rare natural phenomenon.
The adventure begins at Starfish Point, where you’ll have a chance to explore the calm, shallow waters and discover the curious upside-down jellyfish that call it home. Then, under the night sky, we head to Bio Bay for the main event—a glowing swim you’ll remember forever.
Whether you dip in or stay dry, this magical two-stop tour is a must during your visit to Grand Cayman.
Schedule & prices
Runs
Every day
Start times
6:30 PM
Next available
Thu, Oct 8
Adult (ages 12+)
$154
Child (ages 3–11)
$134
Infant (ages 0–2)
Free
From the operator’s live schedule on Viator, checked Oct 7.
Tour Options
Cayman Bioluminescent Bay Night Tour
Itinerary
Starfish Point
90 min
Prepare for an unforgettable island adventure! Your journey begins with a scenic 40-minute drive across Grand Cayman’s breathtaking landscape, heading toward the island’s stunning East End.
Next, you’ll arrive at the iconic Starfish Point, one of the Cayman Islands' most beloved sunset spots. As the golden light reflects off the calm, crystal-clear waters, you’ll have the perfect chance to snap incredible photos and soak in the beauty of this serene coastal gem.
A must-do experience during your Cayman getaway—relax, explore, and let the magic of the moment take over.
Bioluminescent Bay
90 min
Uncover one of Grand Cayman’s most enchanting secrets in the tranquil waters of Cayman Kai—a glowing bioluminescent bay that comes alive after dark. Guided by local experts, you'll slip into the warm, calm water for a magical swim as millions of microscopic plankton light up around you with every movement, creating a surreal underwater glow.
After this once-in-a-lifetime experience, sit back and relax as we take you comfortably back to your accommodation. Share your stories, relive the magic, and enjoy the peaceful ride home.
Escape the crowds and dive into a rare natural wonder—this is Grand Cayman like you’ve never seen it before.
What's included
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
Not included
Gratuities
Transfer service is available exclusively for accommodations located in the Seven Mile Beach area.
Snacks
Pickup Locations & Times
Complimentary shuttle service is available to and from resorts, condos, and Airbnbs within the Seven Mile Beach area. Once your booking is confirmed, we’ll send you the exact pick-up time.
To help us provide a seamless experience, please share the full name of your accommodation. We kindly ask that you be ready and waiting at least 5 minutes prior to your scheduled pick-up time since our drivers cannot wait longer than 5 min at the lobby.
Traveller Ratings
Reviews collected by Viator and Tripadvisor
5.0
1 reviews
5
1
4
0
3
0
2
0
1
0
How it compares in Grand Cayman
Starting price $154 is 41% above the typical $109 for tours of similar length in Grand Cayman
Excurgo comparison of 213 Viator tours, recalculated daily.
Important Information
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
Travelers must bring their own towel
Please be aware that the tour start time may vary depending on the time of year to ensure the best experience.
Please note that this natural wonder varies in intensity each night, making every visit uniquely spectacular.
Total tour time includes travel time, with the actual Bioluminescence Tour lasting 2 hours from dock to dock.
Tours are scheduled according to moon phases, so availability may vary.
Please note that images are for illustrative purposes only; your actual experience may differ, showcasing the enchanting unpredictability of bioluminescence.
Transfer service is available exclusively for accommodations located in the Seven Mile Beach area.
Flotation devices for children under age 3 are not available
Late Arrivals / No-Shows: Guests who arrive late or fail to show up for their activity are not eligible for a refund.
Weather: This tour operates rain or shine. Please check the forecast and dress appropriately for the day’s weather.
Cancellation
For a full refund, cancel at least 24 hours before the scheduled departure time.
1+ days before100% refund
0–1 days before0% refund
Frequently asked questions
How long does Cayman Bioluminescent Bay Night Tour take?
Cayman Bioluminescent Bay Night Tour lasts about 3 hours. The itinerary has 2 stops.
How much does Cayman Bioluminescent Bay Night Tour cost?
Prices start at $154 per person for this Grand Cayman experience, booked through Viator with the price shown before checkout. There is 1 booking option, so the final price depends on the option you choose.
What days does Cayman Bioluminescent Bay Night Tour run?
According to the operator’s current schedule, it runs every day, starting at 6:30 PM.
How much does Cayman Bioluminescent Bay Night Tour cost for children?
Children aged 3–11 pay from $134, adults from $154. Infants go free.
Can I cancel Cayman Bioluminescent Bay Night Tour for free?
Yes. Cancel at least 1 day before the start for a full refund. Later cancellations are non-refundable.
Is hotel pickup included?
Yes, pickup is offered. Complimentary shuttle service is available to and from resorts, condos, and Airbnbs within the Seven Mile Beach area. Once your booking is confirmed, we’ll send you the exact pick-up time.
To help us provide a seamless experience, please share the full name of your accommodation. We kindly ask that you be ready and waiting at least 5 minutes prior to your scheduled pick-up time since our drivers cannot wait longer than 5 min at the lobby. Pickup points include The Residences at Seafire.
What languages is Cayman Bioluminescent Bay Night Tour offered in?
The experience is available in EN.
Is this a private or a group tour?
It is a small-group experience with a maximum of 35 participants.
Is the tour suitable for children?
Infants and small children can ride in a pram or stroller Infants are required to sit on an adult’s lap Flotation devices for children under age 3 are not available
Is the tour wheelchair accessible?
Wheelchair accessible
Will my booking be confirmed immediately?
Yes, bookings are confirmed instantly.
Reviews(1)
Reviews collected by Viator and Tripadvisor
H
Heidi_W
January 19, 2026 · via Viator
Wonderful experience, the...
Wonderful experience, the crew did not let the rain ruin anything. So glad we didn’t cancel. Loved the evening boat ride to see the starfish and the bioluminescence was amazing
Operator response
Thank you so much for your kind review! We’re thrilled to hear you had a wonderful experience despite the rain. Our crew always does their best to make every tour special, and we’re so glad you didn’t cancel—the evening boat ride, starfish, and bioluminescence are truly magical. We hope to welcome you back again soon!
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