Okinawa Police Registration System
In Okinawa Prefecture, all marine leisure operators are required to register with the Okinawa Prefectural Public Safety Commission. Under the "Okinawa Water Safety Ordinance," businesses offering marine activities such as diving, snorkeling, and banana boat rides must file reports covering their safety management systems and instructor qualifications. Choosing a registered operator is the first step toward a safe marine experience.
Maruyu Certification
"Maruyu" (◯優, meaning "excellent") is a certification granted by the Okinawa Prefectural Public Safety Commission to marine leisure operators that demonstrate outstanding safety practices. Only operators meeting strict criteria — including documented safety management protocols, qualified instructors, proper equipment maintenance, and insurance coverage — receive this designation. Maruyu-certified operators undergo regular compliance checks, making the certification a reliable indicator of safety standards. On OnlineOkinawa, we clearly indicate whether each listed shop holds Maruyu certification.
Diving Safety Checklist
- Bring a valid C-card (certification) — not needed for introductory dives
- Avoid excessive alcohol consumption the night before diving
- Do not fly within 18 hours after diving
- Practice ear equalization techniques before the dive
- Disclose any medical conditions (heart disease, asthma, epilepsy, etc.)
- Follow the buddy system — never dive alone
- Pay close attention to the pre-dive briefing
- Perform thorough equipment checks (BCD, regulator, pressure gauge)
- Stay well hydrated throughout the day
- Cancel without hesitation if you feel unwell
Snorkeling Safety Checklist
- Always wear a life jacket
- Ensure your fins fit properly
- Apply anti-fog treatment to your mask beforehand
- Stay within the area designated by your guide
- Do not push yourself in strong currents
- Never stand on or touch coral reefs
- Wear sun protection (rash guard recommended)
- Take regular rest breaks
- Wait at least 30 minutes after eating before entering the water
- Follow your guide's judgment in poor weather or sea conditions
Boat Tour Safety Checklist
- Locate life jackets and learn how to wear them before departure
- Take seasickness medication in advance (30 minutes before departure recommended)
- Wear non-slip footwear on the boat
- Store valuables in a waterproof bag
- Listen carefully to the pre-departure safety briefing
- Follow the captain's instructions during sudden weather changes
- Keep a close eye on small children at all times
- Swimming and activities after drinking alcohol are strictly prohibited
Emergency Contacts
Dive Insurance
We strongly recommend purchasing dive insurance before your Okinawa diving trip. Standard travel insurance policies often do not cover diving-related incidents, particularly decompression sickness (DCS) treatment. DAN Japan (Divers Alert Network) offers dive insurance covering DCS treatment, emergency evacuation, and hyperbaric chamber costs, starting from approximately 4,000 yen (about $27 USD) per year. Many dive shops also offer single-day leisure insurance for 500-1,000 yen ($3-7 USD). For introductory (discovery) dives, the shop's facility liability insurance typically provides coverage, but it's always best to confirm beforehand.