Where is the largest swamp in the world?

The Pantanal, spread mainly across western Brazil and extending into Bolivia and Paraguay, is the largest tropical wetland on Earth, covering an area estimated between about 140,000 and 200,000 square kilometres depending on the season. Each year, rains flood the vast plain, and the water slowly drains away over the dry months, creating a dynamic mosaic of lakes, marshes, and grasslands. This seasonal rhythm makes the Pantanal one of the richest wildlife habitats in the world, home to jaguars, caimans, giant otters, capybaras, and hundreds of bird species. It is often considered a better place to see wildlife than the denser Amazon rainforest because the open landscape makes animals easier to spot. The Pantanal is recognised for its biodiversity but faces threats from fires, agriculture, and climate change.