Bioluminescence can be observed under normal circumstances, but certain organisms, like Aequorea victoria, may require specific conditions to display their bioluminescent features, such as a green ring at the margin of their bell. This ring is often not visible unless the jellyfish is disturbed. While some bioluminescent phenomena, like fireflies, can be seen with the naked eye, researchers may use fluorescence microscopes to examine finer physiological details that are not visible to the naked eye. The discussion also highlights that many aquatic organisms can control their fluorescence, often in response to environmental stimuli, such as turbulence in the water, which can trigger bioluminescent displays in phytoplankton. The use of Green Fluorescent Protein (GFP) and other chemical drivers like Aquorin in research is noted, with GFP being more convenient for study despite the jellyfish's complex bioluminescent mechanisms.
