Jeju Island is South Korea's largest island, covering an area of 1,833.2 km², which is 1.83% of the total area of the country. Alongside outlying islands, it is part of Jeju Province and makes up the majority of the province. From Wikipedia
A new study reveals genetic traits and training effects that enable Jeju Island's Haenyeo women to dive deep into icy waters, even while pregnant, though their centuries-old tradition faces decline.
