Rivers & Lakes of the world
Rivers, creeks, lakes, ponds and streams are all freshwater habitats. So are wetlands like swamps, which have woody plants and trees; and marshes, which have no trees but lots of grasses and reeds.
Freshwater accounts for only three percent of the world’s water (the rest is saltwater.) But despite that tiny amount, freshwater habitats are homes for more than 100,000 species of plants and animals.