Sea-Monkeys belong to the family Artemiidae that are aquatic crustaceans living in inland salt lake and are also called brine shrimp. Since, there is only one genus is the Artemiidae family the genus of Artemia is also called brine shrimp. Brine shrimp avoid most predators by living in very high salinity (up to 25%) water. They inhabit inland saltwater areas, such as brine pools and other highly salty habitats, and are not found in ocean environments. This picture shows brine shrimp harvesters in the Great Salt Lake in Utah.
https://wildlife.utah.gov/gsl/harvest/information.php