Blue Cave Snorkeling from Naha & Chatan — Cape Maeda’s Electric Blue Swim
Difficulty
easy
Duration
3–4 hours
Fitness Level
Basic swimming ability and comfort in open water; life jackets are used so excellent fitness isn’t required.
Overview
Float at the mouth of an illuminated sea chamber and watch sunlight turn water an impossible blue. This pickup-inclusive snorkel trip from Naha or Chatan makes Cape Maeda’s Blue Cave accessible for beginners and seasoned snorkelers alike.
Blue Cave Snorkeling from Naha & Chatan — Cape Maeda’s Electric Blue Swim
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You push off from Maeganeku Port and the boat rocks easy, the island wind brushing your cheeks. Half a dozen heads tilt toward a slit of water where the sea looks impossibly lit from inside — the Blue Cave. Light folds through the cave entrance, paints the surface electric blue, and for a few heartbeats the ocean seems to be holding its breath for you.
Adventure Photos
Adventure Tips
Bring reef‑safe sunscreen
Wear reef-safe SPF and reapply on land — the reef is fragile and sunscreen residues damage coral.
Secure gear and phone
Use a small dry bag for phones and keys; the boat crossing is short but splashy and the cave lure makes you forget to protect valuables.
Arrive ready for pickup
Pickup times are the departure times—be at your meeting point at least 10 minutes early to avoid delays.
Dress for water temperature
Wetsuits may be supplied seasonally; wear a rash guard or bring a suit in spring/fall when water chills quickly.
Local Insights
Wildlife
- Green sea turtle (frequent)
- Parrotfish and other colorful reef fish
History
Cape Maeda sits on Ryukyu limestone and sits within coastal waters historically used by Ryukyuan fishermen; the cave’s name Ao no Dokutsu (Blue Cave) comes from the vivid blue light that has long amazed locals.
Conservation
The Blue Cave’s reef is sensitive—follow no‑touch rules, use reef‑safe sunscreen, and listen to guides to minimize impact on corals and marine life.
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Adventure Hotspots in Naha
Frequently Asked Questions
Recommended Gear
Reef‑safe sunscreen
Protects skin and the coral — bring a sunscreen labeled reef‑safe.
summer specific
Rash guard or thin wetsuit
Prevents chafing from the life jacket and adds warmth in cooler months.
spring specific
Waterproof phone case / dry bag
Keeps your phone, wallet and camera dry during the boat ride and at the port.
Closed‑heel fins or sturdy fins
If you have your own, they’ll fit better than rental fins and improve control in current.