The search to find the Sea-Monkey’s place among the living thing on earth has taken us five levels down the taxonomy chart to the Class level. The taxonomy levels are shown on the left. The Crustaceans Phylum is divided into five classes: Branchipoda, Maxillopoda, Ostracoda, Malacostraca, and Remipedia.[1] The figure on the right shows examples of each class. This image shows Brine shrimp as an example of the class of Branchipoda. Sea-Monkeys belong to the class of crustaceans call Branchiopoda and they are brine shrimp.
[1] Marine Education Society of Australasia, Crustaceans, http://www.mesa.edu.au/crustaceans/ (accessed 2021/01/21)