Reefwander

Kume Island · Japan · Wall

Umagai

A sheer reef wall that falls from 7 m to past 40 m.

Umagai is a dramatic reef wall on the north side of Ugan-bishi, 10 to 15 minutes by boat from port on Kume Island. The wall is one of the island's deep dives, with a top in shallow water and a face that falls away into the deep, in a spot where the current is sometimes strong.

Also known as Oomagai.

Where it is and how deep

Depth profile of Umagai: typical dive 7–40 m (23–130 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit7 m40 mtypical dive
Depths on a shared scale to 50 m (164 ft); dashed lines mark common certification limits.

No published position for this site — the map shows Kume Island and its other sites; operators know the mooring.

The dive

The top of the wall lies at 7 m, and from that lip the sheer face drops past 40 m. Visibility is splendid, and schools of double-lined fusiliers swim through the blue off the wall. On the face live Randall's shrimp gobies, schools of square-spot and Randall's fairy basslets, many red-spotted blennies and leaf scorpionfish.

Marine life and season

The sources we used don't single out particular species here.

Month-by-month season rating for Umagai
JanFebMarAprMayJunJulAugSepOctNovDec
PrimePrimeGoodGoodFairFairGoodGoodGoodGoodGoodPrime

Season follows Kume Island: Mantas run almost all year; winter adds hammerheads, summer adds barracuda, and the rainy season falls from mid-May to mid-June.

Know before you go

  • The current along the wall is sometimes strong.

Dive videos

2012 5 5 久米島 ウーマガイ · dvdiverjp i on YouTube

Sources

  1. Kume Island dive sites — Marine Diving
  2. Kume Island Diving — Okinawa Convention & Visitors Bureau

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