Bioluminescence Boat/Snorkel Tour (Grand Cayman 2020)

About Us
George founded "George's Watersports" in September 2014.

Originally, the business was focused on kayak tours, but as time went on, George moved into paddle board rentals and then boat tours.

Having grown up in the Cayman Islands, George has been involved in watersports for many years, and is focused on providing the best possible experience to his customers.

Below Is A Video Showing Our Bio Tour:


Below Is A Video Showing Bioluminescence:


Tour Description

Take a 20 minute boat ride to the bioluminescent bay.

Once at the Bio Bay, you have the option to snorkel with the bioluminescence.

The visibility of the bioluminescence is literally 10x better in the water with a mask.

The snorkel and mask allows you to see thousands of bright sparkles underwater. If you stay on the boat, you will see exactly what is seen on a kayak, it's just significantly better in the water with a mask. The bioluminescence is caused by millions of single-celled plankton called dinoflagellates that give off light when disturbed in the water at night.

  • Water where we snorkel is only 4 feet deep.
  • The water is not cold.
  • There are NO sharks; there has never been a shark attack in Cayman.
  • Bio Bay is calm with no currents or waves.
  • Jellyfish are not a problem because we have full body wet suits, dive gloves and dive shoes. There are no jellyfish in the winter months, but in the summer months, there are sometimes jellyfish. Even if you were stung by one of these jellyfish, it doesn't hurt and the itchiness only lasts for 5 minutes.

This tour typically departs 15 minutes after the sun sets. It operates year-round, but only for about 2 weeks each month, due to the moon cycle.

Tour Details:

  • Free Transport From Seven Mile Beach
  • Tour Departs From Near Seven Mile Beach
  • Small Groups
  • Free Beer, Sodas & Bottled Water
  • Snorkeling Equipment Provided
  • Comfortable Fast Boat
  • Increased Visibility With The Mask
  • $79 USD Per Person
  • Minimum Age Is 3 Years Old
  • Maximum Weight is 275 Pounds
  • Tour Duration is 2 Hours



What Is The Bio Bay?

The Bio Bay (Bioluminescent Bay) is a man-made bay which was dredged out over 20 years ago.

The Bio Bay was created as part of a real estate project; there are private villas on the shore of the bay.

The physical features of the Bio Bay trap the dinoflagellate plankton, which is why there is such a high concentration of these plankton in the bay.

There is a myth that boats and/or snorkeling are bad for the dinoflagellate plankton in the Bio Bay.

There is no evidence to suggest this is the case; there have been boats in the Bio Bay since its inception; all of the homes on the Bio Bay have docks and boats.

The visibility of the bioluminescence is always fluctuating. The factors that determine the visibility of the bioluminescence is the tide level and weather.


Additional Information:

Our bioluminescence boat/snorkel tour departs from the Cayman Islands Yacht Club. This is on the west side of Grand Cayman, near Seven Mile Beach. This is NOT the George Town Yacht Club.

We recommend that guests book this tour as early in their vacation as possible; there is a relatively high risk of cancellation due to weather; if you make the reservation at the beginning of your vacation, and the tour is cancelled, then you have more potential to reschedule. You can view our cancellation & refund policy here.

We aren't able to accommodate cruise ship passengers on this tour because this is a night-time activity, and the cruise ships leave before it gets dark.


Check Out Our TripAdvisor Reviews Below!


Swimming With Bioluminescence


Below Are Images Of Our Boat:

This is the boat that we use during our bioluminescence snorkel tour.


Our boat's seating layout.
Twin 250-hp outboard Yamaha engines on our boat.


Below Is Our Tour Departure Location:

Our bioluminescence boat/snorkel tour departs from the Cayman Islands Yacht Club. This is on the west side of Grand Cayman, near Seven Mile Beach. This is NOT the George Town Yacht Club.

We also offer free pickup by bus from most major hotels/resorts along Seven Mile Beach. If you need us to pick you up, then you can select your pickup location during the check out process on our website.


We offer the most exciting and convenient bioluminescence tour in the Cayman Islands. Our tour departs from the Cayman Islands Yacht Club, which is a 5 minute drive from Seven Mile Beach and saves you over an hour journey driving to North Side.

The visibility of the bioluminescence is literally 10x better when viewed in the water with a mask. Most people think that the kayak tour is more interactive, but this couldn't be further from the truth. Only on the boat tour do you have the option to go into the water with a snorkel and mask. If you stay on the boat, the visibility of the bioluminescence is the exact same as if you were on a kayak, but when you are in the water with a mask, it is a whole different level. The water is only 4 feet deep, they are no sharks, it is not cold, there are no waves/currents, and we have life jackets.

We limit the tour size to small groups, to allow people to have a more enjoyable and peaceful experience. The boat is a modern speed boat, which is frequently maintained and safe for your friends and family. We offer optional life vests for everyone, in particular for children while we are on the boat. We depart from the Yacht Club and cruise to the Bio Bay where it is possible to see it. The boat is very comfortable with padded seats and space. We offer complementary drinks during the trip with ice so that everyone can stay hydrated. The boat trip takes approximately 20 minutes each way and then we allow everyone to have a sufficient time swimming in the bay before we return to the Yacht Club. We depart from near 7 mile beach.

This phenomenon is caused by millions of tiny single-celled organisms known as “dinoflagellates”. Movement of the dinoflagellates caused by your hand, body, or the boat results in the whole bay erupting in bright light. We offer the opportunity for people on the tour to swim in the bay to enhance the experience. With a snorkel and mask one can see the plankton very clearly and it is like swimming through the stars in the night sky. The dinoflagellates light up like millions of diamonds and contrasting this sight with the darkness of the water makes our tour an unforgettable experience. This tour is enjoyable for everyone and we offer complimentary life vests and wet suits. For those who are not comfortable swimmers, it is possible to see the gentle glow from the boat when everyone else swims in the water.

It is not possible to experience this spectacle everywhere on Grand Cayman, therefore one needs to take a tour to arrive at the Bio Bay. The bay is shallow and sheltered, which makes it the perfect habitat for dinoflagellates. These plankton are not dangerous and you cannot feel them when you swim with them. The extraordinary light which they produce can seen perfectly when there is little or no moon in the sky. Therefore, our tour is dependent on the moon and the weather, so we can avoid light pollution and see the phenomenon well throughout the tour.

Another benefit of this tour is that you will have the opportunity to gaze at the stunning night sky and absorb the beauty of the stars. The stunning contrast of the view of the stars from Grand Cayman, which is away from city lights compared to larger metropolis areas is truly remarkable. If you are lucky, you may also be able to make a wish on a shooting star. It is incredible to experience the sensation of swimming through the sparkles, which is like swimming through the stars, and then looking up and seeing the stunning stars above you.

The location of our tour makes it unrivaled in convenience and offers the best value for money, on top of great customer service. During our Grand Cayman bioluminescence tour, our crew enjoys sharing their wisdom about the island. We can collect you from your hotel or condo and take you to the docks and this service is complimentary to the tour. Our primary aim is to provide a quality service and enrich everyone’s understanding of the Cayman Islands ecosystem, while having a fantastic experience on the water.

Seeing this is a once in a lifetime opportunity and not many people have been fortunate enough to see this amazing phenomenon. This activity is perfect for family and friends who want to do something safe, accessible to everyone and unforgettable. There is nothing more exhilarating then swimming at night through millions of bright sparkles and this activity is consistently viewed as one of the top must do activities in Grand Cayman.