Their bioluminescent properties made them valuable to the Japanese during World War II, when the Japanese army collected large amounts from the ocean to use as a convenient light for reading maps and other papers at night.
As súas propiedades bioluminescentes fixéronos valiosos para o exército xaponés durante a Segunda Guerra Mundial, que os recollían e utilizaban como iluminación suficiente para ler mapas e papeis pola noite.