The light is caused by a chemical reaction that happens inside the dinoflagellate. A chemical called luciferin is responsible for the ... It happens in the presence of an enzyme called luciferase.

Bryan founded Pinetop, Ariz.-based Prolume to develop a line of glow-in-the-dark toys based on the luciferin/luciferase reaction, the same process behind firefly light and chemiluminescent assays. The ...