Sea Firefly (Cypridina hilgendorfii)
Cypridina hilgendorfii. Collected from the sea near Japan, these desiccated organisms provide an example of a luciferin-luciferase system not requiring ATP for bioluminescence. Used by soldiers in World War II to provide a dim night-light; you simply crush the animals in sand and water to get a blue luminescence. Make separate luciferin and luciferase preparations which, when mixed, will luminesce. Instructions included.