Hey, have you ever wondered how the brains of deep‑sea creatures control their bioluminescent displays? It’s like a neural choreography that turns on and off in perfect timing—pretty neat to think about from both a marine and a neurological point of view, right?

It’s a good point—those circuits must be under strong selection. Think about it: a fish that can instantly switch its light pattern to warn predators, lure prey, or attract a mate has a huge advantage. Over generations, mutations that tightened the timing of interneurons would be favored, turning a simple glow into a programmable LED system. In the deep sea, where light is scarce, any edge that improves communication or defense is kept, so that precision probably evolved from a combination of predation pressure, mating competition, and the need for stealth in the dark. It’s like nature’s own neural engineering.