About this tour
When Lily from our BugBitten team booked this Kerama Islands dive trip from Naha, she knew she was heading somewhere proper special — about 50 minutes by speedboat to a cluster of islands with nearly 100 dive sites. The Kerama setup is built for boat diving, which is genuinely the main event here. You're after coral, schools of tropical fish, and if you're going in winter, a shot at spotting humpback whales. The operator keeps group sizes small to keep things comfortable on the boat. Fair warning: you need a diving licence already in hand, and the day runs seven hours total — including travel time.
Highlights
- Nearly 100 dive sites across five main islands within reach
- Winter whale watching included; seasonal visibility and marine life shift regularly
- Small-group boat policy keeps the experience less chaotic than crowded tours
- Pure white sand beaches and thriving coral reefs framing each dive site
- Brightly coloured tropical fish schools and occasional manta ray sightings in summer
- All SCUBA gear included; tea provided on the boat
- Zamami, Aka, Geruma, and Tokashiki islands each offer distinct conditions
What to expect
Your day kicks off with a boat ride to the Kerama Islands — don't expect a quick hop, it's a solid 50-minute crossing from Naha. Once you arrive, the operator takes you to sites matched to the day's conditions and group ability. Lily noted that diving here feels less industrialised than some Japanese hotspots; the sites genuinely vary in fish density, visibility, and reef health depending which island you're exploring. In winter, whale-watching dives are baked into the itinerary, which adds a layer of unpredictability — you might spot them, you might not, but the ocean's working with you either way.
The boat stay is managed with group caps so you're not shoulder-to-shoulder with 40 other divers. Tea and equipment are sorted. Lunch isn't included, so bring snacks or budget for a café meal if islands have them. The seven-hour window includes travel time, so factor in about five hours of actual island time. Expect a rhythm of gearing up, diving, surfacing, and cruising between sites. It's fairly standard day-dive logistics — nothing flashy, just efficient.
What travellers say
- Licensed divers only — keeps skill levels consistent underwater
- Small-group boat policy reduces crowding and chaos
- Seasonal whale watching in winter; near-100 sites offer real variety
- All equipment included; straightforward logistics
- Five distinct islands with different reef and visibility profiles
- Health checklist is strict; no refund if you fail the day-of check
- No lunch included; five-hour island time feels tight with boat travel
- Requires existing diving certification; not for beginners
- Sea conditions and weather dictate site availability; whale sightings not guaranteed
Themes summarised by our team from public information about this tour. Verify specifics on the operator's page before booking.
Good to know
If you're already certified, this is a genuinely decent spread of reachable dive sites without flying to some remote atoll. The variety across five islands means visibility and marine life change site to site, so it doesn't feel like you're repeating the same dive. Winter whale watching is a legitimate draw and is included. Small-group caps mean the boat doesn't turn into a party barge.
You must hold a valid diving licence before you go — this isn't a teach-yourself scenario. The operator's health checklist is strict: pregnancy, recent surgery, cardiovascular issues, ear problems, diabetes, hypertension, and several medications disqualify you. If you fail the health check on the day, no refund — so be honest with yourself beforehand. Lunch is your problem; bring it or find it. Weather and sea state can affect which sites you hit, and winter seas aren't always calm. Bring a packed lunch, water, and sunscreen. All SCUBA gear is covered; tea is on them. Groups are capped but numbers aren't specified — assume 8–15 divers. January–March is peak for whales and whale-watching tours.
Tour sold and operated by Viator via Viator. Descriptions on this page are original BugBitten summaries written by our team — not copied from the operator. Prices and availability are confirmed at checkout.