A marsh is a low, wet area of land that is often flooded and has grasses and reeds growing in shallow water. It is a type of wetland that supports many birds, fish, and other wildlife.
From Old English 'mersc', related to German 'Marsch', meaning 'wet, low-lying land'. The word has always described soggy ground near water.
Marshes used to be seen as useless, swampy land, but now we know they act like giant natural water filters and flood buffers. They’re some of the most productive ecosystems on Earth, quietly doing environmental heavy lifting.
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