Cloze Test Sorusu #8927

In the perpetual darkness of the deep ocean, bioluminescence is not an anomaly but a ubiquitous survival strategy. More than seventy percent of abyssal creatures are estimated to generate their own cold light. Some species produce luminescence endogenously through the luciferin-luciferase reaction, whereas others host symbiotic colonies of glowing bacteria in specialized photophores. Marine organisms employ light for diverse purposes: lanternfish flash bioluminescent bellies to blend with faint surface downwelling, thereby counterilluminating themselves against predators below. Deep-sea anglerfish dangle luminous lures to entangle curious prey. Biologists are continually discovering new fluorescent proteins, which have already provided revolutionary tools for biomedical cellular imaging.