Cas Cay Kayak, Hike & Snorkel – Mangrove Lagoon Adventure from St. Thomas
Difficulty
moderate
Duration
3 hours
Fitness Level
Moderately fit — able to paddle for short crossings, walk on uneven sandy/coral rubble, and swim/snorkel in shallow water.
Overview
Paddle through winding mangrove channels, hike to cliffs and a blowhole, then snorkel coral nurseries on Cas Cay. This three-hour eco-adventure from St. Thomas blends wildlife viewing, geology, and hands-on conservation in a compact, family-friendly outing.
Cas Cay Kayak, Hike & Snorkel – Mangrove Lagoon Adventure from St. Thomas
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The morning light scrapes across flat mangrove roots as the guide clips life jackets and assigns kayaks. You push off into a green maze where channels narrow and open like pages in a field guide; the water nudges the hull, and birds—herons and terns—pick a path through the branches as if guiding you. In three hours the trip moves from quiet paddling to a short, crunchy hike and finishes with bright coral and curious fish beneath the surface.
Adventure Photos
Adventure Tips
Arrive early for check-in
Arrive 15 minutes before departure to use lockers, get fitted for gear, and review the safety briefing.
Wear water shoes
The trail to Cas Cay is sandy with coral and shell rubble—closed-toe water shoes protect feet on the hike and while getting in/out of kayaks.
Use reef-safe sunscreen
Apply reef-safe sunscreen before launch and reapply sparingly; avoid lotion directly before snorkeling to keep coral healthy.
Bring a dry bag and small cash
A small dry bag keeps keys and phones safe; a tip for the guide or small purchases at the marina gift shop are cash-friendly.
Local Insights
Wildlife
- White-faced herons (and similar shorebirds)
- Southern stingrays
History
Cas Cay and surrounding islets have been used historically for limited fishing and navigation; the area is now protected as part of local marine reserve efforts.
Conservation
The site is a designated wildlife sanctuary and marine nursery—visitors should avoid touching coral, take only photos, and use reef-safe products to reduce impact.
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Adventure Hotspots in Charlotte Amalie
Frequently Asked Questions
Recommended Gear
Water shoes
Protects feet on coral rubble trail and provides traction entering/exiting kayaks.
summer specific
Reef-safe sunscreen
Protects skin while keeping the marine reserve healthy.
summer specific
Quick-dry shirt or rashguard
Shields from sun and dries fast after snorkeling.
summer specific
Small dry bag or mesh bag
Keeps essentials dry or secures wet gear provided by guides.