Wadden Sea

The Wadden Sea is the world's largest unbroken tidal flat system, covering 10,000 square kilometers across the Netherlands, Germany, and Denmark. It supports over 12 million migratory birds annually, including 30% of the global black-tailed godwit population. This dynamic ecosystem is faster than the average coastal habitat in nutrient cycling, with daily tides shifting sediments up to 1 meter. It outperforms #4 Schokland in biodiversity value, hosting 2,700 marine and bird species. The site also produces 80% of the region's seafood spawning grounds, a concrete data point underscoring its ecological and economic significance.