Walk on the seabed off St. Maarten in a guided SeaTrek helmet dive—no diving certification required. Descend 20 feet, follow a railinged path past coral gardens, and alternate with snorkeling during a roughly two‑hour outing.
More ways to explore the area's outdoor wonders
The Caribbean sun slants across the surface as the boat motors away from Philipsburg, leaving ribboned wake and a cooling breeze. In the middle of shallow, turquoise water a small platform waits; below, the seabed hums with fish and coral that seem to lean in to inspect visitors. You step down a 20‑step ladder, the SeaTrek helmet sealing out the spray, and the ocean becomes a room you can walk through—current brushing past like a curious companion.
Difficulty
easy
Duration
2–2.5 hours
Fitness Level
Suitable for people with basic mobility who can climb a ladder and walk short distances; not physically strenuous but requires ear equalization and stable balance.
Wildlife
History
St. Maarten’s harbors and reefs were shaped by centuries of maritime trade and occasional wartime activity; local guides often point out how old channels guided colonial shipping routes.
Conservation
Operators emphasize hands‑off viewing and the use of marked paths to protect coral; avoid touching coral and use reef‑safe sunscreen to minimize chemical impact.
Reserve your spot on the SeaTrek Tour St. Maarten today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Practice ear equalization
Start popping your ears while still on the boat and during descent; this avoids discomfort during the 20‑step, 20‑ft descent.
Try the helmet before you go under
Make sure the helmet seals and sits comfortably during the briefing—adjustments are easier topside than underwater.
Protect your camera gear
Use a waterproof housing or wrist strap for cameras and secure loose items in lockers—electronics are allowed but waves and movement can dislodge them.
Hydrate and avoid alcohol
Drink water before boarding and skip alcohol for 12 hours prior to the tour to reduce dehydration and barotrauma risk.
Swimsuit
Lightweight swimwear is comfortable under the helmet and for the snorkeling portion.
Reef shoes or water sandals
Protects feet on wet ladders and rocky surfaces when boarding and disembarking.
summer
Waterproof camera or housing
Capture close marine life shots—secure with a wrist strap or tether.
Ear drops (after consultation)
Helps relieve minor ear discomfort post‑dive; consult a pharmacist if prone to ear issues.