Lake is a large body of still water surrounded by land. Lakes can be freshwater or saltwater and vary in size and depth. Some lakes are very large, while others are smaller but still wider than ponds. Lakes may have rivers or streams flowing into or out of them.

Lakes are found on continents around the world, such as the Great Lakes in North America and Lake Victoria in Africa. They formed over long periods through natural processes like glaciers or tectonic activity. Lakes support ecosystems and are used by people for water, travel, and recreation.