Peatlands are a mixture of elements: they are both water and land at the same time. They form where the soil is wet all year round. Waterlogging prevents dead plant material from decomposing, creating their characteristic organic soils over thousands of years. And peatlands can be found all over the world, from the Arctic to Europe and the tropics, all the way to Tierra del Fuego at the tip of South America. They are impressive ecosystems, rich in rare animal and plant species.