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Streams are small, narrow bodies of flowing fresh water that originate from springs or runoff, often feeding into rivers or lakes.

Bays are water bodies surrounded by land on three sides, typically calmer than the waters outside due to land protection, and serve as safe harbors and rich ecosystems.

Wetlands are areas of marsh, fen, peatland or water, natural or artificial, permanent or temporary, with water that is static or flowing, and support diverse ecosystems.

Lakes are inland bodies of standing freshwater or saltwater, often serving as reservoirs for drinking water, agriculture, and habitats for flora and fauna.

Aquifers are underground layers of water-bearing permeable rock or materials (gravel, sand, silt) from which groundwater can be extracted using a water well.

Ice caps are large areas of ice that cover land and are smaller than ice sheets, holding vast quantities of fresh water and reflecting solar radiation.

Rivers are flowing bodies of fresh water that travel from higher to lower ground, often ending in lakes or oceans, providing water for habitats, agriculture, and human uses.

Glaciers are large, dense ice formations that accumulate over centuries, store freshwater and are vital water reservoirs that contribute to sea levels when they melt.

Oceans are large bodies of salt water that cover about 71% of the Earth's surface, playing a key role in climate regulation and supporting marine ecosystems.