One night tour, two stops
Starfish Point for sunset, then Bio Bay for the glow.
After sunset, swim optionalBioluminescence Tour
Best for: anyone who wants to see something that only a few places in the world can offer.
- Starfish Point at sunset
- The upside down jellyfish talk
- Bio Bay in the dark
- Snorkel gear for everyone ages 4 and up
- Free pickup along Seven Mile Beach
- Flotation devices for children under 4, bring your own
- Bug spray (guests say so)
- A towel and a swimsuit if you want to swim
Sunset, starfish, then the glow
From the live tour description, in order.
Sunset at Starfish Point
A cruise over to Starfish Point for sunset and starfish viewing.
The jellyfish talk
Get educated on the upside down jellyfish before going into Bio Bay.
Into Bio Bay
As it gets dark, the boat moves into Bio Bay, one of only a few places in the world with this glow.
Swim, or watch
Swimming is optional. Get in with the snorkel gear, or watch the glow from the boat.
Back to the dock
About 2 hours 30 minutes after you left.
The glow follows the moon
Our knowledgeable guides here in Grand Cayman know just when to give you a boat tour to the best spot in Bio Bay to see these creatures light up under the starry night sky, as the occurrence follows the moon cycle each month, only allowing guests to observe bioluminescence two weeks out of every month.
- About two weeks out of every month
- Our guides know just when to go
- Ask us for this month's dates
A sea of stars
Memorable Nighttime Adventure
Bioluminescent bay tours typically take place after sunset, adding an element of adventure and mystery to the experience. Whether you're kayaking or swimming in the bioluminescent waters, exploring the bay under the cover of darkness enhances the sense of excitement and wonder.
Stunning Visuals
The bioluminescent glow created by the dinoflagellates illuminates the water with a mesmerizing blue-green light, creating a surreal and otherworldly ambiance. It's like swimming or kayaking through a sea of stars, making for stunning visuals and photo opportunities.
Interactive Experience
Unlike many natural attractions, experiencing a bioluminescent bay is a truly interactive experience. As you move through the water, every paddle stroke or movement creates a dazzling display of light, allowing you to actively participate in the magic of bioluminescence.
Natural Phenomenon
Bioluminescent bays are rare and magical natural phenomena where microorganisms called dinoflagellates emit light when disturbed. Witnessing this ethereal glow in the water is a unique and unforgettable experience that offers a glimpse into the wonders of the natural world.
Bioluminescent Bay Grand Cayman
Grand Cayman is a popular vacation hot spot for many reasons, and one experience that tops the bucket lists of many visitors is a bioluminescence tour because of the extremely rare experience. Our experienced water sports touring company offers a wonderful tour of Bioluminescent Bay in Grand Cayman, where you'll learn all about the millions of microorganisms that make this magical experience possible.
Grand Cayman's Bioluminescent Bay is one of only a few places in the world where you can encounter this magnificent process. Bioluminescence occurs when a high concentration of bioluminescent organisms come together to create their own photon light in the water. Bio Bay in the Cayman Islands is one of the few areas you can explore and interact with this phenomenon.
Our knowledgeable guides here in Grand Cayman know just when to give you a boat tour to the best spot in Bio Bay to see these creatures light up under the starry night sky, as the occurrence follows the moon cycle each month, only allowing guests to observe bioluminescence two weeks out of every month. It is sure to make lasting memories for you and your loved ones.
Start with a cruise over to Starfish Point for sunset and starfish viewing, then get educated on the upside-down jellyfish before going into bio bay to experience this phenomenon (swimming optional) of seeing the bioluminescence, something that only a few places in the world can offer.
Explore Starfish Point And Bio Bay With Captain Marvin's
Our tour of Grand Cayman's most popular phenomenon starts at Starfish Point, where you'll have time to explore the area at sunset and learn all about the upside-down jellyfish that call this spot home. Following that, we will proceed to Bio Bay, where we'll adorn you with the necessary snorkel gear to spend some time snorkeling with the colorful fish before the party starts!
Swimming and snorkeling are always optional for guests, but it's an experience, unlike anything you'll find anywhere else in the world to hop in the water with these tiny microorganisms as they light up the crystal-clear waters of Grand Cayman. Our tours are always family-friendly and guides are more than happy to help little ones get accustomed to their snorkel equipment, so you can enjoy the moment just as much as they will.
What the glow looks like
What guests say about the glow
Three of the 1,560 Google reviews, as written.
“The starfish experience was very informative. Great experience. The water glowing when you snorkel was impressive. The only issue was mosquitoes so bring bug spray!”
“Wow what a great trip!! So informative and so much fun. From the jellyfish to the starfish to the bioluminescent lights!! Such a great crew! 1000/10 Jaydon, Ramos and Michael!!!!”
“Did both the Bioluminescence Night Tour and Stingray City excursion. Both were excellent! The bus drivers and crew on the boat were all fantastic!”
Bioluminescence questions
It is recommended that you know how to swim if you intend to do any snorkeling. We have a lifebuoy that you may use to hang on to during the snorkel stops so you can see the fish and coral if you are not comfortable swimming.
We have no age restrictions on our tours. We ask that if you are bringing along children under the age of 4, you bring flotation devices for them as we do not provide them for children under age 4.
Yes, as most of our business is from the hotels and condos we do offer pick up along the 7 mile beach road.
Yes, we provide snorkel gear (mask, snorkel, fins and snorkel vest or life jacket) for everyone ages 4 and up, included in the price of your tour.
If your cruise ship cannot stop here on its scheduled day, or arrives too late for you to take our tour, you will not be charged. If you need to cancel your reservation for personal reasons, please do so at least 72 hours in advance to avoid being charged. If your ship arrives on time and you do not show up for your tour, you will be charged. If the weather is such that our captain cancels our boat trip, you will not be charged, but we do not cancel for rain only.
