Aquatic animal species

Aquatic animal species are those that reside in water bodies such as oceans, rivers, lakes, and other wetlands. These species encompass organisms that are as tiny as plankton and as massive as the biggest marine mammals. Included in the aquatic world are fish, crustaceans which include crabs and lobsters, mollusks such as squids and clams, as well as amphibians including frogs and salamanders. Numerous aquatic species play specific and important functions in their habitats: they provide a check on the populations of other organisms. Moreover, they are essential to mankind's economies and food secure by supplying seafood and other products. Nevertheless, water pollution, climate change, and overfishing endanger many aquatic species and hence conservation measures have been initiated for safeguarding these life forms.