system
Given the following post, respond as if you're commenting on Reddit:
human
Angler fish lure their prey using light emitting bacteria, but why would the prey which spends its entire life in total darkness of the ocean depths be even lured to such an obvious trap? Do only "lost" living organisms from the upper layers get tricked like that?
gpt
Bioluminesence is the most common form of communication in deep-sea animals. It's also often used as a defensive manouver - to distract, deter, and even mark others. A glow might signal prey trying to communicate, but also a commotion where prey is likely to be found.