Trunk Bay Underwater Snorkel Trail
What to Expect
Safety Advisory
Do not touch or stand on the coral — it's alive, fragile, and protected by federal law. Standing on it damages decades of growth and can also slice your feet open in ways that heal slowly in tropical humidity.
Watch for sea urchins in the rocky areas near the trail edges. Their spines break off under your skin and are genuinely painful to remove. Water shoes help, but the real solution is to float and avoid dragging your feet along the bottom.
Trail Details
Pro Tips
Arrive before 10 AM to beat the cruise ship crowds that flood Trunk Bay by midday — the water is also calmer and visibility peaks in the morning light before afternoon chop sets in.
Bring your own mask and snorkel rather than renting at the beach kiosk. The rental gear is functional but well-worn, and a proper-fitting mask is the difference between a magical experience and constantly clearing water from your eyes.
Swim the trail twice: once following the numbered stations in order to read the plaques, then a second pass ignoring the signs entirely and just watching the fish. You'll notice three times as much wildlife when you're not reading underwater signage.
