TOC
Overview (history, characteristics, attractions)
The Blue Cave is a sea cave located in Onna Village in central Okinawa's main island, and officially refers to an underwater spot near Cape Maeda. It was named after the sunlight that shines into the cave, which reflects and refracts off the seawater, creating a mysterious blue light, and attracts many tourists from both Japan and abroad for snorkeling and diving. The cave is captivating due to the landscape created by the erosion of Ryukyu limestone by the sea and the maintained crystal clear waters.
Highlights
- "Blue light" inside the cave: The light shining in from the cave entrance shines blue underwater, making for a great photo opportunity.
- Colorful tropical fish and coral reefs: You can see them up close by snorkeling or on a trial dive.
- Various entry methods: Beach entry (from the rocks at Cape Maeda) and small boat access are available.
- Highly transparent sea and topography: The opening of the cave and the contrast between the water surface and underwater are beautiful.
Access (nearest station, transportation, etc.)
- Nearest public transportation: Onna Village does not have a railway, so the nearest base is Naha City (Naha Airport).
- By car: Approximately 40-60 minutes from Naha Airport (depending on road conditions). Head north on National Route 58 to Cape Maeda in Onna Village. Parking is available (paid/free varies depending on the season and facility).
- Bus: There are local buses bound for Onna Village from Naha Bus Terminal and Naha Airport. You may need to walk or take a shuttle from the nearest bus stop.
- Tours and transportation: Many dive shops and travel agencies offer snorkeling/diving tours with transportation from Naha city or your accommodation. If you are a first-time diver, it is convenient to use a tour with transportation.
- On foot: From the parking lot near Cape Maeda, you can walk down to the coast via the promenade and stairs. Access involves steep stairs and rocky areas, so wear comfortable shoes.
Estimated stay (estimated time required)
- Observation only (viewing from the sea and taking photos): 30 minutes to 1 hour
- Snorkeling experience: 1.5 to 3 hours (including explanation, changing clothes, and transportation)
- Trial diving: Half day (approximately 3-5 hours) / Often split into morning and afternoon sessions
- Diving (Fun Dive): Half a day to one day (one day if multiple dives are required)
Nearby spots
- Cape Maeda (cape near the Blue Cave): Enjoy the view and coastal walks.
- Cape Manzamo: A scenic spot that represents Onna Village, famous for its cliff views (about 10-20 minutes by car).
- Onna Village beaches (resort hotel beaches, etc.): Plenty of swimming and resort facilities.
- Ryukyu Glass Village and Souvenir Shop: A place to experience glassblowing and shop.
- Okinawa Churaumi Aquarium: Approximately 1-1.5 hours by car (heading north) – If you have time, you can visit both.
Things to be aware of (crowds, manners, seasonal precautions, etc.)
- Crowds: It gets especially crowded during the summer (July to August), Golden Week, and the New Year holidays. We recommend early morning tours and weekday tours.
- Reservations: Because this is a popular spot, it's best to make reservations in advance for snorkeling and diving. Be sure to also check whether transportation and equipment rentals are available.
- Safety measures: Depending on the sea conditions, entry into the cave may be prohibited on the day. The tour will be canceled in the event of high waves or strong winds, so please pay close attention to the weather and sea conditions on the day.
- Manners: Please protect the marine environment by not touching or feeding the corals or other creatures, and by taking your trash home with you. In particular, stepping on the corals will cause them to break.
- Equipment and preparation: Choose sunscreen that is gentle on coral reefs, and bring a change of clothes, a towel, a waterproof camera (if necessary), and cash (some small shops and parking lots may not accept cards).
- Physical condition and skills: For trial diving, you will be checked for your health and shallow swimming ability. If you are unsure about equalizing your ears or swimming, please consult with the shop in advance.
- Seasonal notes: Even in winter, there are days when visibility is good depending on the weather, but the water temperature drops, so you will need a wetsuit and warm clothing. There are also times when jellyfish appear and ocean currents become strong, so please follow the guide's instructions.
The Blue Cave is a popular spot where you can experience a powerful experience in a short amount of time. Please be sure to prepare in advance and observe the rules of etiquette to enjoy the beautiful underwater world safely.
