Roatan sits on the Mesoamerican Reef - the hemisphere's second-largest barrier system. Snorkel boats depart from marinas near the port, supplying masks, fins and a guide who knows currents and cruise return deadlines.
- ✓Half-day sails suit most 7-10 hour port calls.
- ✓Beginners welcome; listen to crew safety briefings.
- ✓Bring a rash guard instead of sunscreens that harm coral.
- ✓Glass-bottom boats are an alternative if you prefer not to swim.