Hanari Island is a small uninhabited island about a 10-minute boat ride from Aharen Beach on Tokashiki Island, and it's the go-to snorkeling spot in this corner of the Kerama Islands for its famously clear 'Kerama blue' water. The shallow reef flat (roughly 2-6m deep) is thick with clownfish and schools of grunts, and turtle sightings aren't uncommon. As of July 2026 the island is still boat-access only — there's no swimming across on your own — and you get there through marine shops and tour operators based at Aharen Beach.
'Kerama blue' visibility often cited around 15-25m
Shallow reef (2-6m) that's forgiving for beginners and families
Clownfish, damselfish and grunt schools right off the beach
Occasional green or hawksbill turtle encounters
A small hilltop and statues on the island itself, worth a short walk after snorkeling
Good to know
SafetyCurrents in the Kerama channel can pick up or shift direction quickly — swimming across from Aharen on your own is prohibited. Go only by boat or tour, and wear a snorkel vest or life jacket.
SafetyLanding spots on the island can be rocky or covered in coral rubble, so water shoes are basically essential.
SafetyHabu jellyfish (box jellyfish) turn up roughly June through October, and the water around Hanari Island isn't behind the protective nets used at regular swimming beaches — wear a rash guard to cover skin and follow your guide's instructions.
RulesThis spot sits inside Keramashoto National Park, where standing on, touching, or collecting coral is prohibited.
MannersIf you spot a turtle, keep your distance rather than chasing or touching it, and never feed the wildlife.
SeasonThe best window is roughly April/May through October; August-September typhoons can cancel tours, so check the latest forecast and operator status before heading out.
Practical info
From Naha's Tomari Port, take the high-speed ferry (about 35-40 minutes) or the car ferry (about 70-90 minutes) to Tokashiki, then it's a 10-15 minute drive to Aharen Beach, where marine shops run the boat shuttle or guided tour out to Hanari Island. Prices and schedules shift with the season, so confirm current details before you book.
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