Emergency contacts in Japan.
Call 110 for police, 119 for an ambulance or fire service, and 118 for a maritime emergency. These numbers are listed by Okinawa's official tourism organisation.
For a serious injury or suspected venomous bite, seek emergency medical help. This travel guide does not provide treatment instructions.
Check official warnings and the daily forecast.
Check Japan Meteorological Agency warnings and follow local instructions. During a typhoon, do not substitute a cancelled boat trip with an exposed coastal drive or walk. Your accommodation and activity operator can help you understand local arrangements.
Choose the sea activity with the conditions.
Clear water and a sheltered-looking beach do not tell you everything about conditions. Ask the relevant operator about suitability for your experience and follow beach signs, closures and current local guidance.
Care for the places you visit.
The national park asks visitors not to collect or feed wildlife, damage coral or leave litter. Respect signs and stay out of private or restricted places.
Allow space in your plan to stop or change direction when conditions do not suit the activity. That flexibility is part of travelling well here.