Kerama Islands: National Park (designated 2014) located 40km west of Naha. Three main islands: Tokashiki (high-speed boat 40 min / ferry 82 min from Naha), Zamami (high-speed boat 50-82 min / ferry 120 min), Aka Island (stop on Zamami route). Known for Kerama Blue transparency (30m+ visibility), 250+ coral species, high sea turtle encounter rate. Whale watching January-March (humpback whales, 90%+ encounter rate). All routes depart from Naha Tomari Wharf.
The Kerama Islands, designated as a National Park in 2014, are famous for “Kerama Blue” — some of the clearest waters in the world. Located just 40-82 minutes by high-speed boat from Naha, these islands offer world-class diving, snorkeling, and pristine beaches accessible as a day trip.
Three Islands Compared
| Island | Travel Time | One-way Fare | Best For |
|---|---|---|---|
| Tokashiki | 40 min (express) / 82 min (ferry) | ¥2,530 / ¥1,690 | Families, beginners, best beach access |
| Zamami | 50-82 min (express) / 120 min (ferry) | ¥3,950 / ¥2,900 | Sea turtles, Michelin 2-star beach |
| Aka | Same route as Zamami | Same as Zamami | Quiet atmosphere, Kerama deer |
Important: Ferry vs High-Speed Boat Boarding Points
Ferries depart from Tomari South Pier (in front of Tomarin building). High-speed boats depart from Tomari North Pier (~10 min walk from Tomarin). This is the most common mistake visitors make.
Activities
Diving and snorkeling are the main attractions. Visibility exceeds 30 meters, with 250+ coral species. Sea turtle encounters are frequent, especially at Zamami. Winter (January-March) brings humpback whale watching with 90%+ encounter rates. Tours from Naha run about ¥4,000-6,000 for a half-day.
FAQ
Can I visit Kerama as a day trip from Naha?
Yes. Tokashiki is best for day trips (40 min by high-speed boat). Zamami is also possible but tighter on time. Book the earliest morning boat and return on the last afternoon boat.
When is the best season?
Swimming/diving: April-October (water temperature 24-28°C). Whale watching: January-March. The islands are enjoyable year-round except during typhoon season.
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Related English Guides
Naha Port Complete Guide — All ferry routes, access & terminals
Kerama Islands Guide — Diving, beaches & whale watching
Toguchi Port Guide — Ie Island, Minna Island & Churaumi access
Naha-Kagoshima Ferry — 25-hour voyage via Amami Islands
Tomarin Terminal Guide — Floor guide & boarding points
KOJ Complete Guide — Jetfoil to Kumejima in 82 min
