The Caspian Sea: The world's largest inland body

There are 415 species of fish in the Caspian Sea, including: the roach, carp, perch, carp, mullet, sprats, bream, and salmon, which can be eaten. As for mammals, the famous Caspian seal inhabits in the sea. Twenty three species of fish are listed as endangered, including caviar-producing sturgeon. Differences in salt content and temperature have a lot to do with determining what life forms are found in a specific area.