Inland waters can help us mitigate climate change by storing carbon in the sediments. However, for a long time, they were ignored as a player in carbon sequestration ―the process of removing CO2 from the atmosphere, transforming it, and storing it underground. Carbon sequestration happens in ecosystems all around the world. Forests and oceans are most well-known for sequestering carbon, but freshwater ecosystems are also good at it. To put this in perspective: inland waters might sequester up to 20% of the amount of carbon sequestered by the oceans, even though they cover <5.6% of the oceans’ area.