The Kosmos Fun Science experiment kit Wriggling brine shrimp allows children to raise and observe small prehistoric crustaceans. The complete set contains brine shrimp eggs, special salt, food, a transparent container, blue gravel, and stickers to decorate the breeding tank. As early as one day later, you can observe the hatching of the first larvae. The set guides you step-by-step through the development from larva to adult brine shrimp and provides fundamental insights into biological processes in water.