Here’s a spot of nostalgia for you. Collecting and growing micro-larvae as pets was a particularly South African prep school fad back in the 80s. Sea Monkeys were conceived in the 1960s as a “biological novelty” and are really nothing more than a unique species of brine shrimp. They can supposedly live for up to two years in their little plastic prisons, but most kids tend to drink, destroy or torture them long before they expire of “natural causes”. You can still order them here.