from $109 The VI Cat — Buck Island Catamaran Sail & Snorkel
- 54-ft catamaran to Buck Island
- Cartanza Señora shipwreck snorkel
- Open bar + snacks
- Up to 65 guests
Snorkeling on St. Thomas, USVI: Best Tours, Beaches & Snorkel Spots
Looking for the best St. Thomas snorkeling tours? In the U.S. Virgin Islands (USVI), warm, clear water and turtle-filled reefs deliver year-round — below we compare top guided snorkel trips, from Brewers Bay to Buck Island and Coki Point, with real prices and honest ratings. Want something different?
- ★ 4.1–5.0 rated
- 396 verified reviews
- Free cancellation on most tours
Quick answer
You can snorkel St. Thomas on your own. You need no permit, and most beaches charge nothing to enter: Coki Point, Brewers Bay and Secret Harbour all hold reef within swimming distance of the sand. Guided trips start at $89 and reach the boat-only sites such as Buck Island and Turtle Cove.
Key takeaways
- Coki Point holds the densest fish on the island, with yellowtail snapper and sergeant majors starting in waist-deep water beside the Coral World park
- Green turtles graze the seagrass at Brewers Bay all year, and a two-hour guided swim there costs $89
- Buck Island, Turtle Cove and the sunken wreck sit past swimming distance from any beach, so you need a boat: a half-day catamaran sail runs $109
- The reefs off St. John lie a short sail east, and one crossing snorkels both islands in a day
- Non-swimmers can still breathe underwater: a SNUBA dive at Coki Point uses a surface air line and costs $102
- Water runs 78°F in February to 86°F in August, so nobody wears a wetsuit; April to June brings the calmest seas and clearest water
Top Rated — 94 Reviews, 4.8★ Most Reviewed Snorkeling Tour in St. Thomas
Island Adventures — All-Inclusive Sailboat Snorkel Day
Rating and review count are the operator’s own figures as published on the booking platform, not scores we award.
A 5-hour all-inclusive sailboat day with breakfast, lunch, an open bar, and two snorkel stops at St. John's National Park reefs.
- Duration
- 5 hours (full half-day with meals)
- Best Time
- Year-round, morning departures
- Price Range
- From $157 per person — all-inclusive
Price checked July 2026, shown per person. Operators set their own prices and can change them.
Check Live Availability & Prices
Real-time dates and prices for our top-rated sailing snorkel trip — book directly.
All Snorkeling Tours on St. Thomas Compared
These snorkeling tours in St. Thomas, Virgin Islands cover the full range, from a 75-minute SNUBA session at Coki Point to a half-day sail with breakfast, lunch and an open bar. Boat tours reach Buck Island and the outer reefs; shore trips start at a beach you can drive to. Every tour includes gear, and prices are per person.
from $109 
from $129 Aqua Marine — Two-Reef Snorkel by Dive Boat
- Two reef snorkel stops
- Small group (15 max)
- Rum punch + snacks
- Dive-boat access
from $150 Seas the Day — Power Catamaran Snorkel Tour
- Fast power catamaran
- Small group (12 max)
- Water, beer & soda
- 4-hour trip
from $157 Island Adventures — All-Inclusive Sailboat Snorkel Day
- All-inclusive sailboat day
- Breakfast, lunch & open bar
- Two St. John reef stops
- 5 hours
from $89 VI Ecotours — Brewers Bay Shore Snorkel with Turtles
- Shore-based guided snorkel
- Brewers Bay green turtles
- Great for cruise port days
- 2 hours
from $102 Coral World — SNUBA at Coki Point
- SNUBA — dive without certification
- Groups of just 4
- Coki Point reef
- 75 minutes
from $1,495 Voyage 500 — Private 50-Foot Catamaran Charter
- Entire 50-ft catamaran for your group
- Choose your own snorkel stops
- Half or full-day charter
- Rated 5★ — 6 reviews
from $131 BOSS Underwater Adventure — Sea Scooter & Snorkel
- Breathe underwater, no certification
- Works for non-swimmers
- 60-foot dive yacht
- Weight limit 350 lb, ages 10+
St. Thomas Snorkeling Tours — Quick Comparison
USVI snorkeling prices cluster between $89 and $157 for a scheduled trip. The table sets the tours side by side on price, length and what each one covers.
| Tour | Price | Rating | Book | Reviews | Duration | Type | Group Size | Food & Drink |
|---|---|---|---|---|---|---|---|---|
| The VI Cat | $109 | New | Check | 0 | 3 hrs | Catamaran sail + snorkel | 65 max | Open bar + snacks |
| Aqua Marine | $129 | 5.0 ★ | Check | 4 | 3.5 hrs | Dive boat — 2 reefs | 15 max | Snacks + rum punch |
| Seas the Day | $150 | 4.8 ★ | Check | 32 | 4 hrs | Power catamaran | 12 max | Water, beer, soda |
| Island Adventures | $157 | 4.8 ★ | Check | 94 | 5 hrs | Sailboat — all-inclusive | Not listed | Breakfast, lunch, open bar |
| VI Ecotours | $89 | 4.1 ★ | Check | 3 | 2 hrs | Shore-based guided snorkel | Not listed | None included |
| Coral World | $102 | 5.0 ★ | Check | 10 | 75 min | SNUBA (snorkel + scuba) | 4 max | None included |
| Voyage 500 | $1,495 (whole boat) | 5.0 ★ | Check | 6 | 4–8 hrs | Private catamaran charter | Whole boat — private | BYO / customizable |
| BOSS scooter | $131 | 4.8 ★ | Check | 247 | 3.5 hrs | Underwater scooter + snorkel | 24 max | Water, juice, cookies |
What Makes St. Thomas a Snorkeler’s Paradise
7+
Shore-access reef spots
Snorkel straight from the beach
77–86°F
Water temperature
Warm year-round — no wetsuit
60+ ft
Typical visibility
Clearest April–June
3–15 ft
Reef depth
Marine life close to the surface
Free
Shore snorkeling
Coki, Sapphire & Brewers Bay
200+
Reef fish species
Recorded in St. Thomas waters
Complete Guide to Snorkeling on St. Thomas, Virgin Islands
Best Snorkel Spots and Beaches on St. Thomas
St. Thomas has at least seven shore-access snorkel spots worth visiting, plus several boat-only sites. The white sand beaches below all have reef within swimming distance, and most have beach chairs, public parking, and a bar and restaurant nearby. Bring or rent snorkel gear and walk straight in.
Together, these reefs and coves make up the best snorkeling on St. Thomas, USVI for every level, from first-timers to confident swimmers.
| Spot | Best for | Access | Level |
|---|---|---|---|
| Coki Point | Most fish | Shore | Easy |
| Secret Harbour | Beginners, turtles | Shore | Easy |
| Brewers Bay | Green sea turtles | Shore | Easy |
| Sapphire Beach | Shallow reef | Shore | Easy |
| Buck Island | Turtle Cove & wreck | Boat only | Moderate |
Coki Point Beach
Coki Point Beach, on the north shore beside the Coral World ocean park, is the island’s most popular snorkel spot. The shallow coral starts in waist-deep water and holds dense schools of fish — yellowtail snapper, sergeant majors and trumpetfish. There are beach chairs, snorkel gear rentals and food trucks right on the white sand. Full guide to Coki Point Beach: fees, facilities and where the fish actually are.
Secret Harbour
Secret Harbour is a calm, protected bay on the east end, ideal for beginners and anyone who is not a strong swimmer. Hawksbill turtles, octopuses and plenty of sea life hide in the rocky crevices on the eastern side, and the beach resort behind it has public parking and a bar and restaurant.
Brewers Bay
Brewers Bay, on the west side near the airport, is the most reliable place to see sea turtles — green turtles graze the seagrass daily, and many visitors recommend this spot for an easy turtle snorkeling tour straight from shore. It has easy parking and food trucks, with calm, shallow water that is great for kids.
Sapphire Beach
Sapphire Beach is a white sand beach on the east end with a shallow reef at the water’s edge and clear views across to St. John. Beach chairs and a beach bar make it easy to spend the day, and the vibrant reef is full of fish and the occasional stingray. Full guide to Sapphire Beach: fees, facilities and where the fish actually are.
Magens Bay
Magens Bay is one of the most beautiful beaches in the Caribbean — better known for its scenery than its reef, but the rocky sides hold reef fish and the odd turtle. It has umbrellas, parking and a beach bar, so it is an easy half-day even for non-snorkelers. Full guide to Magens Bay: fees, facilities and where the fish actually are.
Lindquist Beach & Smith Bay Park
Lindquist Beach, inside Smith Bay Park, is a protected white sand beach with healthier-than-average reef and fewer crowds. There is public parking and a small entry fee — come early for the calmest water and the best sea life. Full guide to Lindquist Beach: fees, facilities and where the fish actually are.
Hull Bay, Christmas Cove & Other Spots
On the quieter north shore, Hull Bay has a laid-back beach bar and easy shore entry. By boat, Christmas Cove off Great St. James is a calm anchorage with abundant sea life and even a floating pizza boat (Pizza Pi). Many catamaran tours add a snorkel stop here on the way back.
How Much Do Snorkel Tours Cost on St. Thomas in 2026?
Guided snorkel tour prices on St. Thomas range from $89 to $157 per person. The $89 tour is a simple 2-hour shore-based experience at Brewers Bay. At the higher end, $157 buys you a 5-hour sailboat trip with breakfast, lunch, open bar, and two snorkel stops at St. John's National Park reefs.
Mid-range options ($102–$150) include multi-reef boat trips, catamaran sails to Buck Island, and the unique SNUBA experience at Coral World. If you want to skip the guided tour entirely, you can snorkel from shore at beaches like Coki Point, Sapphire, or Secret Harbour for free — just bring or rent gear. Mask, snorkel, and fin rental at beach vendors costs roughly $15–$25 per set.
Coral World Ocean Park entry (separate from the SNUBA tour) is approximately $23 for adults.
Private Snorkeling Tours and Small-Group Boat Tours
The scheduled catamarans run a fixed route to Buck Island and fill every seat. A private charter hands your group the whole boat instead: the Voyage 500 costs $1,495 for a half or full day of 4 to 8 hours, and the Island Flyer runs 7 hours of island-hopping between St. Thomas and St. John at the same whole-boat rate. Small dive boats sit between the two. The two-reef trip takes a handful of snorkelers for $129 and reaches reefs the large catamarans skip.
Private St. Thomas snorkeling excursions fill first on cruise-ship days, so pick the date before you pick the boat. If you want a land day instead of a boat day, a private island tour with a local driver-guide starts at $199 for two hours.
What Marine Life Will You See Snorkeling in St. Thomas?
The waters around St. Thomas support a rich variety of Caribbean marine life. Green sea turtles are the most sought-after sighting and are reliably found at Brewers Bay, Christmas Cove, and Buck Island's Turtle Cove. Hawksbill turtles occasionally appear at Secret Harbour and Magens Bay.
Spotted eagle rays glide through deeper channels near reef edges. Southern stingrays are common on sandy bottoms at Secret Harbour and Sapphire Beach. Reef fish include parrotfish, blue tang, angelfish, sergeant majors, yellowtail snapper, and trumpetfish.
At Coki Point, the density of fish is exceptionally high because of its proximity to Coral World Ocean Park. Octopuses and squids hide in rocky crevices, especially on the eastern edge of Secret Harbour. Barracudas are occasionally spotted at deeper sites.
On lucky days near Buck Island, nurse sharks rest under rocky overhangs.
Best Time of Year to Snorkel in St. Thomas
Snorkeling on St. Thomas is good year-round thanks to water temperatures that stay between 77°F and 86°F (25–30°C). No wetsuit is needed at any time of year. The best conditions are from April to June, when visibility peaks and seas are calmest. December through March is peak tourist season — water is slightly cooler at around 77–79°F but still perfectly comfortable, and the trade winds can make north-shore beaches choppier. July through October is hurricane season. Rain is more frequent but usually comes in short afternoon bursts; mornings are typically clear. If seas are rough on the north shore (Coki, Magens Bay), head to the calm east end (Secret Harbour, Sapphire) where conditions tend to be more protected.
In short, the best time to snorkel in St. Thomas is April through June, with calm, clear water and the fewest weather days.
Snorkeling from a Cruise Ship in St. Thomas
St. Thomas is one of the most popular cruise ship ports in the Caribbean, and snorkel tours are among the most booked cruise ship excursions. Ships dock at either the WICO dock in Charlotte Amalie or the Crown Bay dock. From WICO, Frenchman's Cove (departure point for the Buck Island catamaran tour) is a 7–10 minute taxi ride.
Red Hook (departure point for the Seas the Day catamaran) is about 25–30 minutes east. Margaritaville Resort (departure for the all-inclusive sailboat tour) is close to the cruise ship docks. If your port time is limited, the 75-minute SNUBA at Coral World or the 2-hour Brewers Bay turtle tour are the quickest options.
When booking, provide your ship name, docking time, and re-boarding time — all St. Thomas tour operators ask for this to ensure you're back on time.
Snorkeling on St. Thomas vs. SNUBA — What's the Difference?
Standard snorkeling means floating on the surface and breathing through a snorkel tube. You see everything from above, which works well on shallow reefs like Coki Point and Secret Harbour where marine life is within 3–15 feet of the surface. SNUBA is a hybrid of snorkeling and scuba diving.
You breathe through a regulator connected to an air tank that floats on a raft above you, allowing you to dive 15–20 feet below the surface without certification. The Coral World SNUBA tour (tour-6) is the only SNUBA option on this page — it takes place in the protected waters around the Undersea Observatory Tower at Coki Point, in groups of just four. SNUBA is a good choice if you want a deeper look at the reef without a full diving course, but basic swimming ability is required.
What to Wear and Bring for Snorkeling in St. Thomas
All guided tours on this page provide snorkel gear (mask, snorkel, and fins). Wear a swimsuit and consider a rash guard for sun protection — the Caribbean sun is intense, even on overcast days. Apply reef-safe, biodegradable sunscreen before entering the water.
Bring a towel (some tours provide them, others don't), sunglasses, a hat for the boat ride, and a waterproof phone case or camera. Closed-toe water shoes are useful if you plan to snorkel from rocky shore entries like Brewers Bay. No wetsuit is needed — the water ranges from 77°F to 86°F year-round.
If you're prone to seasickness, consider taking medication before a boat-based tour. Drink plenty of water throughout the day.
- Swimsuit + rash guard for sun protection
- Reef-safe, biodegradable sunscreen (non-aerosol)
- Towel, sunglasses and a hat for the boat
- Waterproof phone case or camera
- Closed-toe water shoes for rocky entries
- Seasickness tablets if you are prone to it
Buck Island and the Cartanza Shipwreck — Snorkeling by Boat
Buck Island (Little Buck Island) sits about a mile off the south coast of St. Thomas and is a designated National Wildlife Refuge. It's accessible only by boat and is one of the island's top snorkeling destinations. Turtle Cove on Buck Island's north side has calm, clear water with abundant green sea turtles, rays, and tropical fish — excellent for beginners and families.
Nearby lies the wreck of the Cartanza Señora, a 190-foot WWII-era freighter that was intentionally sunk here after being deemed a navigational hazard in Charlotte Amalie harbor. The wreck sits in shallow enough water to be snorkeled (rather than dived) and attracts schools of yellowtail snapper. Tour-1 on this page sails to this area aboard a 54-foot catamaran.
When to Snorkel on St. Thomas — Month by Month
Water stays warm all year, so timing is about visibility and crowds, not temperature.
Best visibility & calmest seas
Hurricane season — mornings usually clear
Peak tourist season
Water temperatures are approximate monthly averages (°F). No wetsuit needed at any time of year.
Map of the Best Snorkel Spots on St. Thomas
Best Snorkel Spots on St. Thomas — At a Glance
Schematic — not to scale. See the live map above for exact locations.
What Snorkelers Say About St. Thomas Tours
★★★★★
★★★★★
We saw massive turtles, eagle rays, and beautiful fish. Dylan was the best tour guide we've ever had. My five- and ten-year-old want to come back to St. Thomas just to see him again.
★★★★★
★★★★★
The crew knew just where to anchor for green turtles, an eagle ray, and a wide array of coral and reef fish. The lunch buffet was above and beyond. Don't miss it.
★★★★★
★★★★★
Rohan put us right on some turtles we got to snorkel with in a few different places. Very relaxing just chilling all day. Absolutely the best day of our 8-day cruise.
★★★★★
★★★★★
Glen was so patient and explained SNUBA really well. It was our first time and we had an awesome experience — would love to do it again.
Traveler reviews published by the tour operators on their booking platforms. We do not collect, select or edit them.
Why Snorkel on St. Thomas, Virgin Islands?
Warm, Crystal-Clear Water Year-Round
Water temperatures stay between 77°F and 86°F with visibility often exceeding 60 feet. No wetsuit required — ever.
Sea Turtles Almost Guaranteed
Green sea turtles graze the seagrass at Brewers Bay, Christmas Cove, and Buck Island daily. Most guided tours include turtle spots on every trip.
Shore-Access Reefs — No Boat Needed
Coki Point, Sapphire Beach, and Secret Harbour all have vibrant coral reefs starting just feet from shore. Bring gear and walk in.
Easy Access from Cruise Ships
St. Thomas is one of the Caribbean's busiest cruise ports. Most snorkel tours are 10–30 minutes from the docks and fit comfortably within a port day.
What You will See Underwater
A sample of the marine life St. Thomas reefs are known for — and where it is most reliably spotted.
-
Green sea turtles
Brewers Bay, Buck Island -
Spotted eagle rays
Reef edges & channels -
Southern stingrays
Secret Harbour, Sapphire -
Parrotfish & blue tang
Every reef -
Yellowtail snapper
Coki Point, wrecks -
Octopus
Secret Harbour crevices -
Barracuda
Deeper sites -
Nurse sharks
Buck Island overhangs
Frequently Asked Questions About Snorkeling on St. Thomas
Where is the best place to snorkel in St. Thomas?
For the best snorkeling in St. Thomas, start at Coki Point Beach, where dense marine life begins in waist-deep water right next to Coral World Ocean Park. For sea turtles, Brewers Bay is the most reliable spot — green turtles feed here daily. For calm, beginner-friendly conditions, Secret Harbour on the east end has protected water and healthy reef. By boat, Buck Island's Turtle Cove and Christmas Cove near Great St. James offer the best reef diversity and the least crowding. See our sea turtle snorkel guide at Brewers Bay for what to expect at that spot.
Do you need a tour, or can you snorkel from the beach?
No. Several beaches on St. Thomas have excellent reef snorkeling right from shore — Coki Point, Sapphire Beach, Secret Harbour, Brewers Bay, and Lindquist Beach. You can bring your own gear or rent a mask-snorkel-fins set at beach vendors for about $15–$25. A guided tour is worth it if you want to reach boat-only spots like Buck Island or Christmas Cove, if you're a beginner who wants an in-water guide, or if you prefer an all-inclusive experience with food and drinks. Our Buck Island catamaran sail and snorkel guide covers what that boat-only excursion involves.
How much does a snorkeling tour cost in St. Thomas?
Guided tours range from $89 for a 2-hour shore snorkel at Brewers Bay to $157 for a 5-hour all-inclusive sailboat trip with breakfast, lunch, and open bar. Most boat-based snorkel tours with gear and drinks cost between $109 and $150 per person. The Coral World SNUBA experience is $102 for a 75-minute session.
Are there private snorkeling tours in St. Thomas?
Yes. Two boats run whole-boat charters at $1,495: the Voyage 500 for a half or full day, and the Island Flyer for seven hours across St. Thomas and St. John. Your group sets the route and picks the reefs. For one or two people a scheduled snorkel tour costs far less.
Do St. Thomas boat tours include snorkeling gear?
Every boat tour listed here includes mask, snorkel and fins, and the dive-boat trips add a flotation vest. Bring your own mask if you need a prescription lens, because rental stock does not cover that.
Can you see sea turtles while snorkeling?
Yes — green sea turtles are abundant around St. Thomas and are seen on nearly every guided tour. The most reliable spots are Brewers Bay (shore access) and Buck Island's Turtle Cove (boat access), where turtles graze on seagrass beds daily. Hawksbill turtles are occasionally seen at Secret Harbour and Magens Bay. Tour guides know the feeding schedules and places to look.
Is the snorkeling good for beginners?
Very good. Most popular snorkel spots — Coki Point, Secret Harbour, Sapphire Beach — have calm, shallow water (3–15 feet) with sandy entries. The water is warm (77–86°F year-round) and visibility typically exceeds 60 feet. Several tours provide flotation vests, and the Coral World SNUBA session includes a briefing designed for first-timers. Secret Harbour is the single best spot for absolute beginners due to its consistently calm conditions.
Do I need a wetsuit?
No. Water temperature around St. Thomas stays between 77°F and 86°F year-round. A swimsuit and rash guard (for sun protection) are all you need. Even in January and February — the coolest months — the water is warm enough to snorkel comfortably for extended periods without any neoprene.
What is the best time of year to snorkel in St. Thomas?
April to June offers peak visibility and the calmest seas. December through March is popular tourist season with slightly cooler water (still around 77–79°F) and occasional north-shore chop from trade winds. July through October is hurricane season — morning conditions are usually fine, but afternoon storms are more likely. Snorkeling is possible 12 months a year.
Can I snorkel on a cruise ship port day?
Yes. Most snorkel tours fit a standard port day, and you can book one as an independent shore excursion rather than through the ship. The quickest options are the 75-minute SNUBA at Coral World and the 2-hour Brewers Bay turtle tour. Full half-day trips (3–5 hours) also work if your ship arrives early. When booking, provide your ship name and re-boarding time so the operator can ensure you return on schedule. Taxis from the WICO cruise dock to Frenchman's Cove (Buck Island tour departure) take about 10 minutes. Read more about the SNUBA experience at Coral World and Coki Point if you are weighing that shorter option.
What is SNUBA and how is it different from snorkeling?
SNUBA is a hybrid of snorkeling and scuba diving. You breathe through a regulator connected to an air tank that floats on a raft at the surface, letting you dive 15–20 feet underwater without needing scuba certification. It's offered at Coral World Ocean Park in groups of four. Standard snorkeling keeps you on the surface breathing through a tube. SNUBA gives you a diver's perspective on the reef — good for anyone who wants to go deeper without the training commitment of scuba. Our full review of the SNUBA session at Coral World Ocean Park walks through the session step by step.
What should I bring for a snorkel tour?
All six tours on this page provide snorkel gear. Bring a swimsuit, reef-safe sunscreen (non-aerosol), a towel, sunglasses, a hat, and a waterproof phone case. Water shoes are helpful for rocky beach entries. Leave large bags at your hotel or ship — boat space is limited. If you're prone to seasickness, take medication before departure. Cash for tips is appreciated on most tours.
Are the snorkel tours suitable for kids?
Most tours welcome children age 5–6 and up, as long as they can swim comfortably. The catamaran sail to Buck Island (tour-1) and the all-inclusive sailing and snorkel trip (tour-4) are popular family choices. The Coral World SNUBA experience requires a minimum age of 8. Children under 5 are not permitted on the Aqua Marine 2-reef tour. Check age requirements and swimming ability policies before booking.
Is it safe to snorkel in St. Thomas?
Yes. St. Thomas snorkeling sites are generally sheltered with calm conditions, especially on the east and south coasts. All guided tours use certified local guides and provide safety gear including flotation vests. The main safety considerations are sun exposure (use reef-safe sunscreen and stay hydrated), sea urchins in rocky areas (wear water shoes), and boat traffic in busy harbors. Avoid touching coral — it damages the reef and can cause cuts.