Snorkeling Trunk Bay, St. John, U.S. Virgin Islands
Caribbean Sea
North America
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Snorkeling Trunk Bay, St. John, U.S. Virgin Islands

Snorkeling Trunk Bay certainly is the most famed on St John. White powdery sand, azure calm water and divine scenery welcome visitors on Trunk Beach. Trunk Bay snorkeling is an excellent bonus to chilling out on this stellar beach. Trunk Bay waters are home to a fair amount of Caribbean fish and some coral formations though not so dense.

Trunk Bay Snorkeling

Enter the water just from the beach. Water entrance is sandy and a bit steep. Watch out for the breaking waves.

Trunk Cay is situated offshore a little distance of the beach right side. Trunk bay snorkeling trail was constructed by National Park Service and became the beach highlight. The underwater trail signs guide to snorkelers interesting objects of marine life. The length of Trunk Bay snorkeling trail is 650 feet. Unfortunately, high popularity and close to shore location led to underwater trail overuse and there are not much pelagic life and corals left. In order to see the decent marine life, you have to swim further offshore past the snorkeling trail’s end.

trunk beach

Explore the following additional snorkeling areas when visiting Trunk Bay.

Snorkel along the rocky point at the very right end of Trunk Beach. Here you can see sponges, corals, and fish, again not so many but more than on the underwater trail. Corals are less healthy and water is more cloudy when swimming further towards the point.

Snorkeling around Trunk Cay is another option. The distance is approximately 2000 feet, hence, such snorkeling is for strong swimmers only. Remember that only one side of the cay is visible to lifeguards on shore. When you start snorkeling around the cay check that the water is serene.

Trunk Cay right side is rocky with a decent amount of fish. More corals appear the closer to the cay’s point you get. The visibility is also better at the point. The depth drops off to about 20 feet as you pass around the point and begin to swim back to the shore along the Trunk Cay’s left side. You will see a patch of healthy hard and soft corals after passing the point. The spot has quite an interesting topography as well. The left side has less fish but more sponges. Actually, the best spot for seeing corals at Trunk Bay is here. The left side is busier with snorkelers as it is better protected from waves and winds as long as is visible to lifeguards. When you come closer to the coast you get on the underwater trail with its plaques.

You also can snorkel along the beach’s far left rocky edge. At this side you should be more careful as it has higher exposure to waves and winds, strong currents are possible here depending on weather conditions. Most corals are dead on this side.

The maximum Trunk Bay deep is 20 feet.

Where Is Trunk Bay?

Trunk Bay USVI is located on the St John Island’s North-West shoreline. You can get to the bay driving the North Shore Road (Route #20).

Trunk Bay is must see in all tour itinerary, hence, it is usually crowded especially when cruise ships arrive at St John. Early arrival is necessary to get a lot for parking on such days.

Trunk Bay Weather

Trunk Bay is exposed to North, North-East and East winds. If winds blow from those directions the currents are strong and it is rough to swim. The winds are stronger during wintertime and lighter during summertime. Furthermore, the hurricane season is within June – November with the biggest storm threat in August-November.

August is the hottest month with air temperature from +29C to +31,5C. December & January are the coolest months with air temperature from +23C to +27C. The average water temperature within the year is +27C. May-July is the finest time for snorkeling.

trunk bay snorkeling
trunk bay usvi
snorkeling trunk bay
Underwater Life: 
Snorkeling with turtles
Swimming with rays
Coral reefs
Tropical fish
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