Kushiro Shitsugen is Japan's largest wetland, located in Hokkaido. Spanning approximately 26,000 hectares, it is home to diverse ecosystems, including marshes, rivers, and forests. The area is known for its rich biodiversity, featuring various plant and animal species, some of which are rare or endangered. The wetland plays a crucial role in flood control and water purification. It is also a popular destination for nature enthusiasts, offering activities like birdwatching and hiking. Kushiro Shitsugen National Park protects this unique environment, ensuring its preservation for future generations.