In the seas, below the penetration limit of sunlight, there lies a vast undiscovered world of darkness and the creatures that live there have evolved to find a new source of light in themselves. Modeled after them, through the combination of science and imagination, reality and fiction, the author created anO2xia, an imaginary bioluminescent creature that symbolizes all hitherto undiscovered and endangered marine organisms living in these depths. Because the destructive action of humans causes a decrease in oxygen concentration, the creature reacts to an approaching human with a sudden flash and then completely disappears in the darkness. Inspired by scientific research and knowledge, while driven by author’s own fascination with the diversity of life forms, especially microorganisms, the work communicates with the observer through immediate experience, with the aim of warning about the consequences of disturbed balance in aquatic ecosystems and raising awareness of the importance of preserving their biodiversity.