Freshwater organisms

Definition

Freshwater organisms are living things found in freshwater habitats like lakes, rivers, and ponds. They have adaptations that allow them to survive in environments where salt concentrations are lower than their own body fluids.

Related terms

Osmoregulation:

Osmoregulation is the process by which organisms control their internal water and ion (salt) concentrations.

Urea: Urea is a waste product produced by animals during protein metabolism. It plays a role in osmoregulation by helping regulate water balance.

Gills: Gills are specialized organs found in aquatic animals that extract dissolved oxygen from water and release carbon dioxide. They also play a role in regulating ion concentrations for osmotic balance.