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On land, underwater or in the skies, many animals and plants have developed shimmering colors, invisible to the human eye: fluorescence. But what is this particularity for them? This documentary with its beautiful images explores a fascinating field of study, still little explored by science.

Many animal and plant species have developed shimmering colors, invisible to the human eye: fluorescence. How were they able to exploit this faculty in the service of predation or camouflage - in a word, survival?