
Grand Cayman - Bioluminescent Bay Tour
Pick your date
Highlighted days have spots open. Grey days are sold out or not running.
September 2026
Loading live availability
Who is going?
Adults
Age 13 and over
Children
Age 12 and under
Select a highlighted day to see live departure times and the exact price for your group.
Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.6/5
Based on 382 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Grand Cayman - Bioluminescent Bay Tour worth booking?
Grand Cayman - Bioluminescent Bay Tour is a 2.8-hour experience in Grand Cayman, Cayman Islands, from $105 per person. It scores 80 out of 100 on the Outty Ranking, which we label “Exceptional”, based on a 4.6/5 rating across 382 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 80 / 100
- Rating
- 4.6/5 (382)
- Duration
- 2.8 hours
- From
- $105 per person
Your trek to the bioluminous bay leaves at 5:30 PM in winter months and 6:30 PM in the summer months from the Cayman Island Yacht Club Dock B Slip 43. Enjoy a beautiful Cayman sunset on the way to Starfish Point. Bring y
What you get
About this experience
Your trek to the bioluminous bay leaves at 5:30 PM in winter months and 6:30 PM in the summer months from the Cayman Island Yacht Club Dock B Slip 43. Enjoy a beautiful Cayman sunset on the way to Starfish Point. Bring your own beverage, light dinner or snack to enjoy on the boat or the beach. Coolers and ice water are provided. After leaving Starfish Point we head into the beautiful bio bay and spend 30-45 minutes in the bay. You can swim in the bay wearing a snorkeling mask and life vest or stay on the boat to view this amazing sight. Enjoy star-gazing on your journey back to the dock. You might even see a shooting star on a clear night! Tour is back at the dock by approximately 8:00 pm or 9:00 pm, depending on season and departure time. All guests are kindly asked to call and confirm their tour with us at least 24 hours prior to tour date. Please know that tours under ten passengers may not run. Thank you.
What's included
Included
- Water
- Life vest
- Use of snorkeling equipment
- Snorkel mask
Not included
- Gratuities
- Transportation to/from attractions
- Food and drinks
What you'll see and do
Bioluminescent Bay
Swim or snorkel in this magical bioluminescent bay.
30 minutes here
Starfish Point
Get knee deep water and observe the red cushion starfish.
30 minutes here
Where it starts and ends
Meeting point
Grand Cayman
The tour departs from the Cayman Island Yacht Club: Dock B Slip 43, 164 Yacht Drive, West Bay. Take roundabout outlet after passing Kimpton Seafire Resort
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
The tour departs from the Cayman Island Yacht Club: Dock B Slip 43, 164 Yacht Drive, West Bay. Take roundabout outlet after passing Kimpton Seafire Resort
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en, es
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 10 travelers per booking
- Operated by
- Seafarer Adventurers
Know before you go
- Infants and small children can ride in a pram or stroller
- Public transportation options are available nearby
- Suitable for all physical fitness levels
- Please call to confirm your tour 24 hours ahead
- Children must be accompanied by an adult
- Wear bathing suit and bring a towel
- Food and drinks are not offered on this tour; you may bring your own sandwiches and beverages.
- Ice/cooler and water provided on board
- Minimum numbers apply. There is a possibility of cancellation after confirmation if there are not enough passengers to meet minimum requirements. In the event of this occurring, you will be offered an alternative tour date or full refund
- Please note your departure and return times vary with the season. It is best to call to confirm your departure so as to not miss the boat!
Photos






What travelers are saying
Outty’s summary of the themes that recur across 382 traveler reviews. Written by us, not quoted from reviewers.
The guide
3 mentionsTravelers single out the guide as the reason the experience works.
Knowledge and storytelling
2 mentionsReviewers describe the commentary as informative rather than scripted.
Traveler reviews
382 verified traveler reviews for Grand Cayman - Bioluminescent Bay Tour. Ratings and reviews provided by Viator and Tripadvisor.
Magical experience
Seeing the sea stars was really neat, but the bioluminescent plankton takes the cake. The seemingly glittering water as your hands pass through is truly a wonderful experience. Our guides were fabulous and took great care of everyone.
via Viator
Underwater lightining Bugs
The experience was so fun, I had no idea the there was plankton that lit up when brushed against.. they were like underwater lightning bugs.
via Viator
Great experience
This was a fun and smooth tour! The Captain was knowledgeable and personable. From pick-up to drop-off it was all stress free.
via Viator
What a fabulous...
What a fabulous experience! Was a once in a lifetime experience swimming and seeing the bioluminescence Crew was excellent
via Viator
So much fun!!
Fantastic experience from start to finish. So much fun. Pepe and Jose were awesome. Would definitely recommend!!!
via Viator
Good to know
- Duration
- 2.8 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Price range
- $105 to $115
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 134
- Verdict
- Exceptional
Why this scores 80
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Grand Cayman - Bioluminescent Bay Tour: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Grand Cayman.
How much does Grand Cayman - Bioluminescent Bay Tour cost?
+
Prices start at $105 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Grand Cayman usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Grand Cayman - Bioluminescent Bay Tour take?
+
Plan for about 2.8 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Grand Cayman is not rushed.
Is Grand Cayman - Bioluminescent Bay Tour worth it?
+
It holds an Outty Ranking of 80 out of 100, which we label "Exceptional". That score blends traveler sentiment (4.6/5 across 382 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Grand Cayman, and how flexible the cancellation terms are.
Can I cancel or reschedule Grand Cayman - Bioluminescent Bay Tour?
+
Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Grand Cayman - Bioluminescent Bay Tour suitable for kids and families?
+
Yes, all ages are welcome. Families should still weigh the 2.8-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Grand Cayman - Bioluminescent Bay Tour?
+
Around 134 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Grand Cayman can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
+
Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Grand Cayman and add a light layer if any part of the 2.8-hour experience runs outdoors or after sunset.
Where does Grand Cayman - Bioluminescent Bay Tour start and how do I get there?
+
The exact meeting point and directions are on your voucher once you book, and they sit in central Grand Cayman within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Grand Cayman?
+
On Outty we rank every Grand Cayman experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Small Group E-Bike Grand Cayman Ecological Half-Day Tour, Stingray City Experience Plus Two Snorkeling Stops on Grand Cayman, Stingray City Experience Plus One Snorkeling Stop. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Grand Cayman?
+
Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Grand Cayman?
+
Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
+
Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
Ready to lock in your spot?
Pick a date, choose your group, and see the exact price for Grand Cayman - Bioluminescent Bay Tour.
Pick your date




