Definition: 'Actinopteran' is a scientific term that refers to the group of organisms that are able to generate light energy using their own body fluids or chemical compounds. It is an ancient process that has been observed in many living and fossil organisms, including snails, worms, insects, and coral reefs.<0x0A>Actinoptera evolved as a natural adaptation for the changing environments of the world's oceans. The ability to generate light energy has allowed these organisms to survive and thrive in unique environments, including those with low light levels and extreme temperature fluctuations.