It has long been know that the Yellow Sea is of exceptional importance to waders that use the East Asia-Australasian Flyway, particularly on their northward migration. The completion of the gargantuan Saemangeum Barrage in South Korea in 2006 (which, in terms of scale, is not much different from sealing off The Wash where it meets the North Sea!) has almost certainly led to the loss of tens of tho...

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