Nishibama
Depth is the range from the top of the site to its usual maximum; "recommended cert" is the mainstream-agency level operators usually ask for, not a legal rule. Currents and visibility change daily — treat everything here as planning ranges.
Nishibama is the Kerama formula at its cleanest: blinding white sand sloping away from Aka Island's most famous beach, coral heads spaced like furniture, and water so transparent the boat's shadow is part of the scenery. Green and hawksbill turtles graze and doze in fearless numbers, garden eels stipple the sand at the edge of approach range, sea kraits ripple across the bottom on hunting rounds, and anthias smoke over every coral head. Nothing about the dive is difficult, which is the point; it is the Kerama blue doing the heavy lifting while divers simply hang in it.
The moment you come for: Kerama-blue visibility, near-guaranteed turtles, garden-eel meadows off a white beach
Topography: White sand slope and channels with coral heads off a celebrated beach
Current: Channels between the islands can run with tide; guides route around the flow.
Entry: Reached by Kerama day boats from Naha or short hops from Aka and Zamami islands.
Know before you splash
Hazards: Tidal flow in the channels and summer boat traffic over the sand flats.
Conservation: Inside Kerama Shoto National Park: mooring rules apply and turtles set the approach distance, not divers.
Who you'll meet
Banded Sea Krait
Clownfish & Anemonefish
Garden Eel
Green Sea Turtle
Hawksbill Turtle
For photographers
Wide angle: ★★★★★ · Macro: ★★★☆☆ — editors' 1–5 rating of what this site gives each style of shooting