Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, …

Every living thing on Earth needs water to survive, but more than 100,000 species, including our own, need a special kind of water that can only be found in certain places and is in very rare supply: fresh …

2 days ago · This comprehensive guide lists and describes 11 freshwater biomes — including rivers, lakes, ponds, wetlands and springs — with clear tables showing flow type, typical depth and common …

Aug 7, 2025 · Freshwater biomes support an astonishing diversity of life. Though they make up only about 3% of Earth’s water, they host 10% of all known animal species and 40% of all fish species.

Freshwater is defined as having a low salt concentration usually less than 1%. Plants and animals in freshwater regions are adjusted to the low salt content and would not be able to survive in areas of …

Water is essential to life on Earth. It has three phases (solid, liquid, and gas). In these three phases, water ties together the major parts of the Earth’s climate system — air, clouds, the ocean, lakes, …

Jun 8, 2018 · The definition of freshwater is water containing less than 1,000 milligrams per liter of dissolved solids, most often salt. As a part of the water cycle, Earth's surface-water bodies are …

Dec 23, 2025 · From sustaining agriculture and energy to shaping landscapes and communities, freshwater is essential. NASA’s Earth science data helps the nation manage this vital resource, …

Experience this map with real-life stories about freshwater challenges and solutions told by National Geographic Explorers who are working to illuminate and protect the wonder of our world.

Freshwater ecosystems are a subset of Earth's aquatic ecosystems that include the biological communities inhabiting freshwater waterbodies such as lakes, ponds, rivers, streams, springs, bogs, …