Onna

Onna is a coastal area in Okinawa (Nakagami District) that’s known mainly for access to the island’s clear, warm inshore waters. Most diving is based on nearby reef sites along the west coast, typically reached by short boat rides or in some cases from shore, depending on the specific spot and season. You’ll usually find calm, shallow-to-moderate profiles suitable for many Open Water dives, along with deeper reef slopes for divers looking to practice buoyancy and explore drop-offs. Marine life is reef-focused, with reef fish and common tropical species changing with location and time of year. Visibility can be good when conditions are settled, but currents and entry/exit conditions vary by site, so it’s worth checking the plan with a local dive center before you decide on the dive order.