Through the cooperation between the Saudi Red Sea Authority (SRSA) and the General Authority for Survey and Geospatial Information (GEOSA), the first high-precision nautical chart, in both paper ...

The tide-related sea level variations result in a land pass 2.9 km (1.8 mi) long and 10–40 meters wide [33-131 feet] opening for approximately an hour between Modo and Jindo islands.