
easy
2–3 hours
Light fitness; buoyant wetsuit and life jacket make the swim accessible to beginners and most children.
Float into Okinawa’s Blue Cave with a private guide, buoyant suits, and free photos. This short, family-friendly snorkeling tour from Onna offers hands-on safety, crystal waters, and unforgettable blue light photography.
The boat rocks like a promise as it slips away from the tiny Onna port, sea spray chiseling salt into your hair, and the first sliver of Blue Cave appears—an opening in a limestone wall that seems to suck the daylight into a pool of near-electric azure.

Morning light (approx. 9–11am) often produces the brightest cave glow and fewer boats at the entrance.
Apply biodegradable reef-safe sunscreen before arrival to protect corals—reapply after exiting the water.
The launch and return involve wet docks and shallow rocks—grippy water shoes save your toes.
Guides supply up to 50 images and will transfer files to your phone; confirm transfer while at the shop.
The Blue Cave rose in prominence with Okinawa’s recreational diving boom; locals historically used the Maeda shore for small-scale fishing and transport.
Guides enforce no-contact rules and recommend reef-safe sunscreen to help protect the coral from physical damage and chemical stressors.
Protects coral and prevents sunburn during surface intervals.
summer specific
Grippy soles for rocky docks and shallow entry points.
Adds sun protection and a layer against wind when coming out of the water.
spring specific
Useful for changing and staying warm after the swim.