Fig. 1From: New findings on submerged patch reefs and reefal carbonate rocks at water depths of 70–100 m on the insular shelf off Miyako-jima, southern Ryukyus, JapanBathymetric map of the Ryukyu Island Arc along the Ryukyu Trench and around the study area (right bottom). Submarine topographic relief data are from the JTOPO30v2 provided by the Marine Information Research Center, Japan Hydrographic Association. The study area is located around Miyako-jimaBack to article page