St Thomas in the U.S. Virgin Islands is a prime spot for snorkeling thanks to its clear waters, abundant marine life, and protected coral reefs. Whether you want to swim with sea turtles, explore shipwrecks, or relax on secluded beaches, the island has a variety of options. We particularly like the National Park Snorkeling Excursion because of its convenient locations and vibrant underwater scenes, which include turtles, squid, and even a shipwreck in Christmas Cove. Plus, the open bar afterward makes it a perfect combination of adventure and relaxation. If you’re after a smaller, more intimate experience, the Private Half-Day Guided Snorkeling Charter offers personalized attention, perfect for families or groups seeking exclusivity. Overall, St Thomas delivers some of the Caribbean’s best snorkeling, with options suited for every type of traveler.
Quick Overview
The list below covers guided snorkeling tours, private charters, combo boat and beach trips, and even underwater scooter adventures. Each experience offers unique highlights, from turtle encounters to reef exploration and boat parties. For more details, see the individual descriptions. Now, let’s explore what makes each of these top tours special.
1. National Park Snorkeling Excursion
At number 1, this 3.5-hour tour takes you through the Virgin Islands National Park, a protected area known for its vibrant coral and abundant marine life. The tour includes two snorkeling stops where you can look for turtles, tropical fish, and colorful coral, with all equipment provided. The highlight is the chance to see a shipwreck in Christmas Cove, which adds an element of exploration. After snorkeling, you can unwind with an open bar offering cocktails, cold beers, and soft drinks—a great way to relax after your underwater adventure. The tour’s multiple meeting points in Red Hook, Cruz Bay, Crown Bay, and Havensight make it flexible for travelers arriving at different locations. Reviewers consistently praise the guides, especially Captain CJ and John, for their helpfulness and local knowledge. This tour is excellent for those looking for a balanced mix of underwater exploration and island comfort.
Bottom Line: A well-rounded, friendly tour offering excellent value, especially for first-timers wanting a mix of wildlife, shipwrecks, and drinks.
2. Snorkeling Adventure in St Thomas
Coming in at number 2, this 4-hour afternoon tour focuses on encountering sea turtles, including green turtles and yellowtail snappers. Setting sail aboard a 42-foot diving boat, the small-group format ensures personalized attention. Participants can expect to see rays, tropical fish, and vibrant coral reefs. Snacks and light refreshments are served in between dives, making it easy to stay energized. The guides are praised for their helpfulness, sharing local wildlife insights, and finding calm waters even on windy days. Many reviews mention how children and families enjoyed the close-up turtle sightings, making this a family-friendly choice. The balance between wildlife encounters and relaxing boat time offers great value for a moderate price.
Bottom Line: Perfect for wildlife lovers and families looking for a more intimate, turtle-focused tour with a friendly crew.
3. SeaFari FastCat – Sun, Fun, Swimming, Snorkeling & Boat Party
Number 3 delivers 4 hours of high-energy fun aboard a turbo-powered boat. This secluded beach tour visits Limestone Bay and Honeymoon Cove, both of which are ideal for snorkeling, swimming, and relaxing. It’s perfect if you want a lively, social atmosphere combined with adventure—think rum punch, local music, and the thrill of a fast boat ride around Water Island. The tour’s fast pace and vibrant vibe make it popular among young travelers and those looking for a party on the water. Reviewers rave about the crew’s friendliness and the stunning scenery, plus the opportunity to paddleboard or float at each stop.
Bottom Line: A lively, activity-rich day with snorkeling, swimming, and a boat party vibe—great for groups, friends, or solo travelers wanting energy and fun.
4. Guided Underwater Scooter and Snorkeling Activity in St. Thomas
Number 4 introduces the underwater scooter experience, a modern twist for those seeking something different. Over approximately 3.5 hours, you’ll cruise on your own electric scooter to explore tropical reefs and colorful fish, all while guided by an experienced crew. No diving experience is necessary—just a sense of adventure. This tour stands out because of its personalized, driver-controlled scooters and the chance to see marine life from a new perspective. Many reviewers highlight how safe and fun this experience is, even for those with fears of the water. The tour includes all equipment, water, and a scenic cruise to the dive site.
Bottom Line: A unique, high-tech way to see underwater scenery without needing to be a strong swimmer—ideal for tech lovers and those wanting a memorable, hands-on experience.
5. Full Day Snorkeling and Beach Hopping – 37′ Intrepid
Ranked number 5, this private full-day charter offers the ultimate customizable experience for up to 12 people. It’s perfect for families or groups who want to tailor their day—snorkeling reefs, visiting beaches, and exploring the island’s best spots. The 7-hour trip provides flexibility to pick stops like charming reefs or quiet beaches, with the crew offering expert recommendations. Reviewers appreciate the captain’s knowledge and the ability to adapt the day to their preferences. The cost might seem high, but it’s a private tour with a dedicated crew, making it worth it for those seeking exclusivity and a personalized experience.
Bottom Line: Top choice for groups wanting a flexible, private day on the water with personalized stops and no crowds.
6. Private Half-Day Guided Snorkeling Charter in St. Thomas
Number 6 is a luxury option for those who want privacy and expert guidance. This exclusive 4-hour tour includes a private 42-foot boat and a marine specialist guide. You’ll explore prime snorkeling spots, including Christmas Cove and Little Saint James, with all gear provided. The tour’s reviews emphasize the personal touch, with rave comments about the helpful guides, safety, and the quality of the equipment. It’s an excellent choice for couples, families, or small groups wanting an intimate, tailored experience that combines snorkeling, sightseeing, and relaxation.
Bottom Line: Perfect for travelers seeking privacy, personalized service, and a relaxed pace for their snorkeling adventure.
7. Half Day Snorkeling Tour from Margaritaville
Next on our list, this 2.5-hour tour is geared toward cruise passengers or those with limited time. It offers a short but sweet experience exploring nearby reefs and beaches. Its convenience makes it ideal for travelers who want a quick taste of Caribbean snorkeling without missing other activities. While shorter, reviews note the friendly crew and the beauty of the reefs, perfect for a brief adventure. It’s a budget-friendly option for those wanting to sample the underwater world without a long commitment.
Bottom Line: A practical, quick trip suited for cruise visitors or those on a tight schedule who still want to snorkel.
8. Snorkeling with Sea Turtles at St. Thomas
Number 8 offers an up-close encounter with sea turtles, lasting about 2 hours. The tour takes place at a protected Caribbean sanctuary, where you can see turtles in their natural habitat. The guide is praised for making the experience educational and safe, especially for first-timers. After snorkeling, there’s 30 minutes of leisure beach time for relaxing and photos. It’s ideal for those particularly interested in marine wildlife and specifically in swimming alongside gentle turtles.
Bottom Line: A must-do for wildlife lovers seeking a memorable, turtle-focused experience in a calm, scenic setting.
9. Private Full Day Guided Snorkeling or Diving Charter in St. Thomas
Number 9 features an all-day private adventure for up to 10 people, with flexible stops and personalized itineraries. Highlights include exploring Buck Island, shipwrecks, and protected reefs. The tour emphasizes eco-friendliness and comfort, with all gear and drinks included. Reviewers love the flexibility and the quality of the guides, who share stories about the island’s history and marine environment. It’s suited for serious snorkelers and divers who want a private, immersive experience with the freedom to choose their stops.
Bottom Line: A top-tier private tour for those eager to see multiple sites with a dedicated crew and tailored itinerary.
10. Private Power Catamaran – Secluded Beaches and Turtles
Number 10 offers a 6.5-hour private charter aboard a wide, stable power catamaran. It’s perfect for small groups wanting to explore secluded beaches, snorkeling, and turtle sightings. The crew takes you to quiet spots like Honeymoon Bay and Water Island, with plenty of options for swimming, snorkeling, and relaxing. Many reviews highlight the boat’s comfort and the friendly crew’s local knowledge. The tour includes beverages and snacks, making it a luxurious yet flexible way to enjoy the island’s waters.
Bottom Line: Ideal for intimate groups seeking a luxurious, private day with plenty of time for snorkeling and beach lounging.
11. Vi Top Taxi & Tours USVI – Coki Beach Snorkeling Tour
At number 11, this 2-hour private taxi tour combines sightseeing with snorkeling at Coki Point Beach. You can customize your stops, including Mountain Top and Drake’s Seat, before relaxing on the lively Coki Beach. It’s great for travelers who want a mix of scenic views and snorkeling without a full-day commitment. The reviews mention the ease of booking, the friendly driver, and the fun atmosphere at Coki Beach, making it a flexible way to experience the island.
Bottom Line: Perfect for a quick, flexible sightseeing and snorkeling combo with a local touch.
12. Sunset on the Water + Night Snorkeling with Guide in St. Thomas
Number 12 features a romantic evening experience. You’ll enjoy watching the sunset on the water before transitioning to night snorkeling with a guide. The tour lasts about 2.5 hours and offers the chance to see marine life that only comes out after dark, including possible turtles, rays, and octopus. It’s ideal for couples or travelers looking for a unique, atmospheric experience in a calm setting.
Bottom Line: A memorable evening option that combines sunset views with the thrill of underwater night exploration.
13. Private Sunset Charter + Guided Night Snorkeling in St Thomas
For those seeking exclusivity, this private 2.5-hour sunset and night snorkel trip provides a smooth, tailored experience. You’ll watch the sunset from the boat, then get in the water with a guide to see nocturnal marine life. It’s suitable for small groups or couples wanting a romantic, private outing with all equipment included. Keep in mind that the reviews praise the professional guides and the flexibility to choose your preferred snorkeling spot.
Bottom Line: A private, romantic option for sunset lovers and night snorkelers wanting a customized, intimate experience.
14. I Like Turtles Private Sailing and Snorkeling from Sapphire
Number 14 offers a 3-hour private sailing trip specifically focused on swimming with green sea turtles. You’ll sail on a classic monohaul sailboat to a protected cove, with all gear, drinks, and snacks included. Reviewers mention the serene sailing experience and the chance to see turtles up close, making it a relaxing yet exciting day. It’s ideal for couples or small groups who want a leisurely day on the water with a focus on wildlife.
Bottom Line: An intimate sailing adventure that combines snorkeling with the chance to interact with gentle turtles—great for romantic or quiet days.
$799.00 per group (up to 6)
15. St. Thomas Full Day Private Boat Charter for Beaches & Snorkeling
Closing our list, this full-day private charter offers maximum flexibility. You can choose stops like Brewer’s Bay, Water Island, and Lindbergh Bay, with time to snorkel, swim, and relax on beautiful beaches. It’s perfect for larger groups wanting control over their day, with amenities like beverages, charcuterie, and snorkeling gear included. Many reviewers praise the crew’s knowledge and the chance to customize their itinerary for a truly exclusive experience.
Bottom Line: The best choice for families or groups who want a personalized, luxurious day on the water with access to multiple beaches and reefs.
$1,950.00 per group (up to 6)
How to Choose Your Perfect Snorkeling Experience
When selecting your ideal tour, consider your budget, available time, fitness level, and what kind of experience excites you most. If you love wildlife and want a good chance to see turtles, the snorkeling with turtles at St. Thomas (see here) or the private sailing trip (see here) might be perfect. For those seeking a private, tailored day, the full-day private boat (see here) offers exceptional flexibility.
Budget travelers might prefer the Half Day Snorkeling Tour from Margaritaville (see here), which provides a quality experience in a shorter timeframe. If you’re after something completely different, the underwater scooter adventure (see here) can make your trip truly memorable.
Booking early is always smart, especially in peak season, to secure your spot on these popular tours. Consider your interests—wildlife, privacy, party vibe, or adventure—and pick the one that best suits your vacation style.
In summary, St Thomas has a diverse range of snorkeling experiences to enjoy, from half-day excursions perfect for cruise ship visitors to full-day private charters tailored to your wishes. Whether you want to float alongside sea turtles, explore shipwrecks, or just relax with a cold drink after a swim, there’s an option here for you. For ultimate flexibility and personalized service, the private tours stand out; for lively social atmospheres, boat parties deliver fun. Whatever your choice, booking ahead ensures you don’t miss out on these fantastic underwater adventures.