St. John's reefs are the reason two-thirds of the island is a National Park. The water is consistently 78–84°F, visibility runs 60–100 feet on a good day, and you can be on a coral head within five minutes of leaving your villa. Here are the eight spots we send guests to, ordered roughly from easiest to most adventurous.
1. Trunk Bay underwater trail
The marked snorkel trail on the east side of Trunk Cay. Shallow, easy, labeled — perfect first snorkel of the trip. Best for: first-timers, families.
2. Maho Bay seagrass beds
The turtle beach. Swim 50 yards out and float over the grass. Best for: sea turtle sightings.
3. Waterlemon Cay
A small island off the Annaberg ruins at Leinster Bay. A 20-minute walk from the parking area, then a swim or kayak across the cut. The reef ringing the cay is one of the best in the park — eagle rays, nurse sharks, dense schools of grunts. Best for: intermediate snorkelers willing to walk.
4. Salt Pond Bay
South-shore alternative when the north shore is windy. Calm bay with rocks at both ends — head right toward Drunk Bay for sea fans and squid.
5. Haulover Bay (north)
Quiet, often empty. Rocky entry, but big elkhorn coral colonies and usually a turtle or two.
6. Hawksnest east point
15 minutes from Cruz Bay, easy entry, underrated reef on the eastern point.
7. Honeymoon Beach rocks
The far ends of Honeymoon. Not amazing reef, but reliable for an afternoon paddleboard-and-snorkel combo.
8. Boat-only: Carval Rock, Congo Cay, Lovango Cay
The wild ones. Pelagics, big schools, the occasional reef shark. These only work from a boat — which is why we built Sunset Villa's Land & Sea package around a day on Stella Blue.
What to bring
- Your own mask if you can — rental masks leak
- Reef-safe (mineral) sunscreen — chemical sunscreens are banned in the USVI
- A long-sleeve rash guard — you'll burn through any sunscreen
- Underwater camera or GoPro — water clarity rewards it
Underwater etiquette
Don't touch coral. Don't stand on the reef. Don't chase turtles. Don't feed fish. These reefs are recovering from two Category-5 hurricanes and a coral bleaching event — every kicked-up sand cloud sets them back.
Part of the Things to Do in St. John, USVI: The Insider's Guide.
Frequently asked
›Where is the best snorkeling in St. John?
Waterlemon Cay tops most lists for variety and turtle sightings. Trunk Bay's underwater trail is the easiest first snorkel, and Maho Bay is the most reliable for turtles right off the beach.
›Do I need a guide to snorkel in St. John?
No — the best spots are shore-accessible and free. A guide is worth it once, for a boat trip to spots like Congo Cay or Lovango that you can't reach from land.
›Is it safe to snorkel alone in St. John?
Generally yes at protected bays like Trunk, Maho, and Honeymoon. Always snorkel with a buddy at Waterlemon Cay because of the current on the far side of the cay.
Keep reading
Beaches
Trunk Bay, St. John: The Complete Guide (Snorkel Trail, Fees, Parking)
Everything you need to know about Trunk Bay on St. John, USVI: the underwater snorkel trail, National Park fees, parking tips, what to bring, and the best time to arrive.
Beaches
Maho Bay, St. John: The Sea Turtle Beach (And Why Families Love It)
Maho Bay on St. John is the easiest place in the USVI to swim with sea turtles. A complete guide: parking, the food trucks, snorkeling tips, and how it compares to Trunk Bay.
