Prominent Biofluorescence Discovered in Arctic Fish biology science
A juvenile variegated snailfish imaged under white light and under fluorescent lighting conditions. White light: dorsal view; ventral view. Fluorescent lighting: dorsal
Biofluorescence results from the absorption of electromagnetic radiation at one wavelength by an organism, followed immediately by its reemission at a longer, lower-energy, wavelength. Marine organisms biofluoresce by absorbing the dominant ambient blue light via a variety of fluorescent compounds and reemit it at longer wavelengths, visually resulting in green, orange, and red fluorescence.
Although this ability is now well documented in tropical fishes that live in regions where there is an even amount of daylight year-round, it was unknown how prolonged periods of darkness in the Arctic might affect fish biofluorescence.
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