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Quick answers
Which local rescue or training agency should I check first?
Use the local lens: coastguard/federation norms and the shop briefing for that bay — not a blog visibility claim.
Kerama?
A national park (2014) west of Naha, known for clear water, turtles, and boat snorkel/scuba. Zamami is a common gateway island.
Ishigaki manta?
Boat sites such as Manta Scramble / Kabira-area points where manta rays are seen in season. Distance rules apply. Not a first Maeda day.
Yonehara?
A beach and reef on Ishigaki used for snorkelling when conditions allow, a sand-entry contrast to a manta boat.
Miyako / Irabu?
Limestone islands with shore and boat sites, including well-known caves and drops. A different map from Naha.
Yonaguni?
Japan's westernmost inhabited island, famous for a submerged rock formation and strong current. Advanced, remote, optional. This page is not a monument theory essay.
The method is a checkout at a main-island shop or a Kerama boat, with Cape Maeda as a crowded shore option. Ishigaki mantas and Miyako limestone are later maps. Yonaguni is a remote exam.
A first day belongs on a marked beach or a Kerama snorkel, not in a blown manta current or a Yonaguni channel.
Steps
- Pick the island, then the site
Naha, Kerama, Ishigaki, Miyako and Yonaguni are different seas.
A prefecture is not one lagoon.
- Maeda: early, briefed, no crowd-panic
Stairs, swell, overhead-adjacent cave.
If the swell is up, the cave is a lookout.
- Kerama as a park boat
Turtles, clarity, a 2014 brief.
Zamami is a gateway, not a guarantee of glass.
- Ishigaki: manta distance
No chase, no blocking a cleaner.
Yonehara is the sand classroom.
- Miyako limestone as a map, not a dare
Caves and drops with a guide.
See cavern caution in the scuba chapters.
- Yonaguni only as a planned, current-literate trip
Remote, advanced, optional.
This page will not argue a monument.
Skills
- Shore-entry stairs and swell — Maeda craft.
- Park-boat manners — Kerama.
- Manta distance — Ishigaki.
- Limestone overhead discipline — Miyako, Maeda.
- Saying the cave is too crowded — Social courage.
Progression
- Minna or a main-island beach / Kerama snorkel — The classroom.
- Cape Maeda in a quiet hour or Kerama scuba — After a checkout.
- Ishigaki manta or Miyako wall — A second island.
- Yonaguni — A later, optional exam.
Common mistakes
- Maeda at midday in August as a first ocean hour — Crowd plus swell.
- Chasing an Ishigaki manta — How boats write rules.
- Yonaguni as a first Japanese dive — Current and remoteness.
- Kneeling on a Kerama shallows for a turtle photo — The park sermon.
The method is a park boat and an early shore hour. Yonaguni can wait for a different year.