Cape Maeda Blue Cave Snorkelling

真栄田岬（青の洞窟）

Snorkel into a sea cave where the water glows electric blue

⚠ Closed in high waves

Hours

Car park 7am–7pm, showers and lockers 7am–6:30pm, office 8:30am–5:30pm (official site)

Tickets

Free on your own (parking ¥100/hour, shower about ¥200 per 2 minutes, locker ¥100, as of Sep–Oct 2026). Guided tours priced by operator; book ahead on Klook and similar

Address

Cape Maeda pay car park, 469-1 Maeda, Onna

You climb down the cliff stairs from the car park, slip into the sea, and a few minutes' swim brings you into a cleft in the rock. Turn back toward the entrance and sunlight bouncing off the sandy floor makes the whole cave glow electric blue. On the way, tropical fish crowd close enough to brush you. Most people go with a guided tour, either by boat or entering from the shore. When the waves are up, the cave is closed for the day.