St. Thomas Snorkeling Tours Ranked by Seasickness Risk

We scored 23 snorkeling tours in St. Thomas from their listings. 4 tours of 23 score 2 or lower on our 1–5 seasickness risk scale. The calmest options are Cas Cay - Kayak Hike and Snorkel Adventure (Virgin Islands Ecotours); Guided Underwater Scooter and Snorkeling Activity in St. Thomas (BOSS Underwater Adventure).

This score is our estimate from the listing’s description, not an operator figure. How we score.

TourSeasickness riskOperatorFrom
2.5 hours Pig Island-Virgin Islands & Snorkeling Jet Ski Safari
“Driver must be 18 years old or above”
2/5Samui Jetski Safari$208Check dates
Cas Cay - Kayak Hike and Snorkel Adventure
“Thomas' Mangrove Lagoon, including the pristine Cas Cay.”
2/5Virgin Islands Ecotours$99Check dates
Guided Underwater Scooter and Snorkeling Activity in St. Thomas
“This unique underwater scooter allows you to view the wonders of the sea with no diving experience necessary...and you are the driver.”
2/5BOSS Underwater Adventure$131Check dates
Small Group Sea Turtle Tour (Guaranteed to see turtles)
“Snorkel in the clear calm waters with sea turtles during your visit the island's best kept secret spot to snorkel with the resident sea turtles!”
2/5St Thomas Adventure Tours$89Check dates
Turtle Cove Catamaran Snorkel and Sail at Little Buck Island STT
“Estimate from activity type”
3/5The VI Cat$119Check dates
Full-Day Sailing Tour in Virgin Islands National Park
“Estimate from activity type”
3/5Max Charters$285Check dates
Norman Island - The Indians & The Caves Sailing & Snorkel Tour
“Estimate from activity type”
3/5Aristocat Daysails$225Check dates
Snorkel St. John Tour from Sapphire and Margaritaville
“Estimate from activity type”
3/5Island Adventures (New Horizons & Breakaway Charters)$160Check dates
Afternoon Snorkel, Pizza & Sunset Tour departing from St. Thomas & St. John
“Estimate from activity type”
3/5Ocean Surfari Charters$120Check dates
Half Day Luxury Catamaran Turtle Snorkel And Beach
“Estimate from activity type”
3/5Someday Charters$159Check dates
Snorkel & Swim with Turtles. Semi Private Tour to Buck Island & Honeymoon Beach
“Estimate from activity type”
3/5Seas the Day Charters and Tours$128Check dates
St Thomas Mangrove Lagoon Kayak and Snorkel Tour in the US Virgin Islands
“Take a kayak and snorkel adventure through St.”
3/5Virgin Islands Ecotours$89Check dates
Snorkeling Adventure in St Thomas
“Estimate from activity type”
3/5Aqua Marine Dive Center$129Check dates
St Thomas~St John Snorkel, Swim & Beach Trip on MV Island Flyer
“Estimate from activity type”
3/5Seas the Day Charters and Tours$128Check dates
Snorkeling with Sea Turtles at St. Thomas
“Estimate from activity type”
3/5Virgin Islands Ecotours$89Check dates
St. Thomas Maho Bay Turtle Snorkel Sail - Ritz-Carlton
“Estimate from activity type”
3/5Cruz Bay Watersports$159Check dates
Sail, Shop and Snorkel in St. John from Westin Frenchman's Reef
“Estimate from activity type”
3/5Cruz Bay Watersports$129Check dates
Snorkel Tour
“Estimate from activity type”
3/5Aqua Action Dive Center$120Check dates
Discover the Best of St. John - Snorkel, Beach & Shopping!
“Estimate from activity type”
3/5Cruz Bay Watersports$129Check dates
St. John, US Virgin Islands: Honeymoon Beach Hike and Snorkeling
“Estimate from activity type”
3/5Virgin Islands Ecotours$99Check dates
Half Day Luxury Catamaran Sail And Turtle Snorkel
“must be brought with you on the tour.”
4/5Someday Charters$129Check dates
St. Thomas Turtle Snorkel and Luxury Catamaran Sail Half Day
“must be brought on the tour”
4/5S2 Luxury Sailing$129Check dates
National Park Snorkeling Excursion
“Come snorkeling with us aboard Reef Surfari, our new 47’ power catamaran, through the Virgin Islands National Park around St.”
4/5Ocean Surfari Charters$90Check dates

Questions

Which snorkeling tour in St. Thomas is best if I get seasick?

Start with Cas Cay - Kayak Hike and Snorkel Adventure (Virgin Islands Ecotours); Guided Underwater Scooter and Snorkeling Activity in St. Thomas (BOSS Underwater Adventure); 2.5 hours Pig Island-Virgin Islands & Snorkeling Jet Ski Safari (Samui Jetski Safari). Their listings describe the calmest water or most stable boats. Our score is an estimate from the listing text.

How up to date is this information?

We last checked these listings on 2026-11-02 and re-check every listing monthly. Operators can change their rules, so confirm before you book.

Restrictions come from each tour’s listing on GetYourGuide or Viator: the suitability notes, “Know before you go”, booking rules, and what is and isn’t included. Last checked 2026-11-02. Operators change rules, so confirm before you book.

More about snorkeling tours in St. Thomas

Seasickness risk: snorkeling tours elsewhere