Area Overview
The Kerama Islands are an archipelago of approximately 30 islands located about 40km west of Naha, designated as a National Park in 2014. The ocean here, known as "Kerama Blue," boasts world-class water quality with visibility exceeding 50 meters, making it a sacred destination for divers from around the globe. Zamami, Tokashiki, and Aka are the main inhabited islands, each offering distinctive diving points and beaches. The islands are also known as sea turtle nesting grounds, and the probability of encountering sea turtles while snorkeling is remarkably high.
Available Activities
Diving
The Kerama seas offer world-class visibility. From drift diving to macro photography, sites satisfy divers of every level.
Snorkeling
Sea turtle encounter rate is nearly 100%. A dream-like snorkeling experience surrounded by coral reefs and tropical fish in crystal-clear waters.
Whale Watching
Humpback whales gather around Kerama in winter (January-March). Tours from Zamami Island are famous for their exceptionally high encounter rates.
SUP & Kayaking
Glide across the Kerama Blue surface on SUP or kayak. The exceptional visibility means you can see coral and fish on the seabed below.
Uninhabited Island Tours
Boat tours to uninhabited islands in the Kerama chain. Enjoy snorkeling and beach time in a private beach-like setting.
Popular Spots
Zamami Island
Furuzamami Beach earned two stars in the Michelin Green Guide. A prime location for sea turtle watching, and a whale watching base in winter.
Tokashiki Island
The largest island in the Kerama chain. Tokashiku Beach offers near-certain sea turtle sightings. Aharen Beach is popular for its beautiful sand and clear waters.
Aka Island
The quietest and most tranquil of the main Kerama islands. Nishibama Beach is a pristine natural paradise. Home to the Kerama deer, a protected species.
Uchizando Reef
A signature Kerama diving point. Highlights include manta ray and sea turtle encounters, plus massive coral colonies.
Access Information
From Naha Tomarin Port to Zamami Island: approximately 50 minutes by high-speed boat (Queen Zamami), or about 2 hours by ferry. To Tokashiki Island: approximately 35 minutes by high-speed boat (Marine Liner Tokashiki), or about 1 hour 10 minutes by ferry. To Aka Island: approximately 50 minutes as a stop on the Zamami-bound high-speed boat, or about 1 hour 30 minutes by ferry. Numerous day-trip diving and snorkeling tours operate from Naha. During peak season, boat reservations fill up quickly - book early.
Seasonal Guide
| Season | Conditions | Recommended Activities |
|---|---|---|
| Spring (Mar-May) | Water temp 22-25°C, peak visibility | Diving, Sea turtle snorkeling |
| Summer (Jun-Sep) | Water temp 27-29°C, typhoon season caution | All activities, Uninhabited island tours |
| Autumn (Oct-Nov) | Water temp 25-27°C, calm and ideal | Diving, Snorkeling |
| Winter (Dec-Feb) | Water temp 21-23°C, whale season | Whale Watching, Diving |
Safety Notes
- As remote islands, medical facilities are limited. Those with pre-existing conditions should confirm available care in advance.
- For day trips, manage your time carefully to avoid missing the last boat back to Naha.
- All ferry services are cancelled when typhoons approach. Build flexibility into your itinerary.
- Do not touch sea turtles even if you encounter them - they are legally protected.
- Be careful with your fin kicks to avoid damaging coral. Please help protect the marine environment.
- Summer sun is extremely intense. Stay hydrated and apply reef-safe sunscreen regularly.
Find Marine Shops in the Kerama Islands
Find OperatorsDrive to Tomarin Port
Rent a car to reach Naha Tomarin port for Kerama ferries.