Experience the wonders of the ocean without getting wet with Caicos Tours’ Semi-Submarine in TCI. Dive into the “Beautiful by Nature” coral formations and marine life with over 20 years of expertise. Immerse yourself in the third-largest reef in the world.

Designed in Australia to explore the Great Barrier Reef, the Undersea Explorer offers comfort and your very own viewing window. Explore the magical underwater world with the whole family, as it’s a safe and exciting adventure for all ages. Our guided tours will have you sitting 5 feet below the surface of the water, in air-conditioned comfort with your very own viewing window.

To ensure the best experience, we tailor our tour times to the ocean conditions and tides. Contact us by phone or email to inquire about our schedule. Each tour lasts approximately 50 minutes on the water. Undersea Explorer offers two types of tours:

Join us for an unforgettable adventure with our Reef Adventure operates Monday through Saturday, or opt for our Mermaid Adventure tours on Tuesdays and Fridays (other days available upon request) With air-conditioning on board your comfort is guaranteed.


Our team of passionate ocean faring crew take immense pride in creating unforgettable memories onboard Undersea Explorer.

But don’t just take our word for it, let our satisfied patrons do the talking.


We take immense pride in creating unforgettable moments for our cherished guests.
But don’t just take our word for it; let our satisfied patrons do the talking.

Great experience. You get within a few feet of reefs. The windows were spotless so the views were at least as good as snorkeling if not better.

The guide Geneva was super enthusiastic and knowledgeable.

We saw lots of turtles and even two dolphins….

We did The Reef Tour and loved it! The owner was very nice and the tour guide was very friendly and knowledgeable. We learned so much and saw pretty fish, sting rays, more than 20 turtles and more on our tour. Our kids are 6 and 8 years old and had a great time.

Michele Kosco

Breathtaking tour and amazing views. The tour guide was very knowledgeable and knew all of the sea creatures and underwater plant life. We saw over 25 sea turtles and even a sting ray. Will definitely recommend this tour for all ages even little babies. Took several memorable pics and would do it again especially for large family groups

Whitney Miranda

Experience the underwater beauty of our marine world.

What You Need to Know Before the Tour

Arrive at least 15 minutes prior to the tour time to sign, payment is received by the Captain before the tour departs.

Bring your camera and a small carry-on bag for personal items, space is limited.

The lower cabin is air-conditioned and seats 16 passengers comfortably.

Access is by foot, shoes can remain on your feet, there are stairs leading down to the lower cabin, no wheelchair ramp is available and Infant strollers can be left in your vehicle.

During the tour you will be shaded from the sun (and rain), sunscreen is only necessary for dockside sign in.

Food and drinks are not provided so feel free to bring your water bottle with you, glass bottles not recommended and we prefer no food downstairs at any time during the tour. Please take care to not scratch the windows.

Beach towels not necessary, we do provide life jackets if and when required.

The semi-submarine is a very stable vessel but some movement may be felt in the open ocean so if you are prone to claustrophobia we suggest sitting near the back of the vessel near the exit as this is usually sufficient to alleviate concerns.

If you are prone to motion sickness please prepare yourself in advance (we do not provide medication)