St. Thomas Mangrove Lagoon Cas Cay Kayak, Hike & Snorkel (3 hours)

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  • Adults: $79.00
  • Child (7-12 yrs): $49.00
  • Child (2-6 yrs): Free

On this tour you will: 

  • Kayak through many small islands made up of red mangrove trees.
  • Learn about the wildlife that thrive in this mangrove ecosystem both above and below the water.
  • Hike and explore a pristine, deserted island complete with tidal pools, volcanic cliffs, and a geological blowhole.
  • Snorkel in a coral fringed mangrove nursery.

This award winning tour offers a unique, multi-eco experience. Explore the many small islands that make up St. Thomas' Mangrove Lagoon and learn why the mangrove ecosystem plays a crucial role in protecting healthy offshore coral reefs and local bird and reef fish populations.

The tour begins as you make your way in a kayak through several small islands made up of red mangrove trees. Many birds make their nest in the trees and if you look up, you’ll have a chance to see blue herons, night herons, egrets, yellow warblers, hummingbirds, or even spot the endangered brown pelican. Look down into the clear water and you can see juvenile fish hiding among the roots where they school together to stay safe from potential predators.

 As you come to Cas Cay, the hiking portion of the tour begins. Explore the pristine, deserted, 15-acre island, which is a part of the larger Virgin Islands Park System. Reach vistas and breathtaking views from coral and shell beaches. Explore the mangrove forest on foot and even try to spot a hermit crab race. The hike brings you to tidal pools, volcanic cliffs, and a unique geological blowhole.

 Then, snorkel and explore a fringing reef mangrove nursery. Your guide will point out marine life and interpret the nuances and complexities of the diverse mangrove ecosystem. You will also receive snorkeling instruction for those who are inexperienced or who want extra tips to make the most of the experience exploring this underwater world.

If you have any further questions on what to expect on this tour please call us toll free at 1-877-845-2925.



St Thomas, Virgin Islands, US
  • Meet Virgin Islands Ecotours at the Mangrove Lagoon Marina.
  • Kayak through the narrow mangrove waterways, making your way to Cas Cay.
  • A hike around this site will take you to tidal pools, volcanic cliffs, and a geological blowhole.
  • A guided snorkel introduces you to marine life in the clear, protected waters.
  • Paddle back to the Mangrove Lagoon Marina. 

Please arrange to arrive at Virgin Islands Ecotours in the St. Thomas Mangrove Lagoon Marina 15 minutes prior to your tour departure time.


Our main marina is located on the southeast side of St. Thomas. Here's how to find us:

From Town: Take route 30 East until it intersects with route 32 (also the Bridge to Nowhere/Esso Station), turn right (southeast) and we are located on the right side of the road. We're the big green trailer with the mask and snorkel on the side.

From Red Hook: Head southwest on route 32 towards town, we are located on the left side of the road. We're the big green trailer with the mask and snorkel on the side.

At the end of this exciting tour, you will return to our marina at St. Thomas Mangrove Lagoon with your guide.

 We kindly ask our guests to bring along the following items for their tour, so they can have as much fun as possible:

  • Bathing suit & towel
  • Clothing that can get wet, hat, sunglasses etc. for sun protection
  • Footwear that can get wet (watershoes or sandals), strap around the heel recommended.
  • Gratuity for your guides
  • A great attitude to have the best experience of your holiday!


As a part of this tour, we include snorkels & masks, kayaks & paddles, life jackets, a mesh bag for items that can get wet, free lockers, beverages & snacks, a full safety briefing, and kayaking/paddling & snorkeling instruction. There are also dressing rooms & toilet facilities available.

Photo CD - There will be a photographer who will take pictures of your entire tour experience and offer a photo CD of 250-300 pictures for $45. None of these photos are water marked and you will be able to email, download, print, and publish them anyway you choose. In addition, we will include our "Best Of" CD for free, which showcases hundreds of our favorite pictures that we have collected over the years—they are catalogued to help you learn, identify, and remember the creatures and plants that you saw on your tour. 

Other Items - The store offers incidentals you may have left behind including towels, sunscreen, and sunglasses. We also sell t-shirts and wet/dry perfomance shirts, water shoes, and souvenirs to remember your adventure.

  • Adults $79.00
  • Child (7-12 yrs) $49.00
  • Child (2-6 yrs) Free


Your payment is 100% refundable until 24 hours before the date and time your tour is due to depart. If you cancel your booking with less than 24 hours notice or fail to show up for your tour, then the full cost of the tour will be charged to the credit card used to guarantee your tour.

St Thomas, Virgin Islands, US