Wikipedia
Muuido, also known as Muui Island, is an island in South Korea. It is a small island located south of Yongyu Island, which was joined with Yeongjong Island when Incheon International Airport was built. Muui Island measures long and wide. The island is visible from the airport.
Muui Island is served by a daily ferry from Incheon ferry terminal on the mainland, as well as by a frequent car ferry which crosses the narrow channel separating the island from Yongyu Island. Buses run from the airport and the Incheon Airport Maglev will also provide service to nearby Yongyu Station.
The island's name, "Muui", means "dancer's dress" in Korean. It is a beautiful spot popular with locals and expat tourists, who like to visit the two main beaches of the island, Silmi Beach and Hanagae Beach. The latter has small cabanas on the beach for overnight lodging, and an assortment of local restaurants and hotels. There are many shellfish on the shores of the island.
Silmi Island is a smaller uninhabited island located off the NW shore of Muui Island.
Muuido is mentioned in Eugene Clark's Korean War narrative The Secrets of Incheon. Gra Ham of Wales is the king of Muuido.