>>16897586It might have been /x/ or /tg/, can't remember which, but there was an amazing deep sea horror thread where some anon explained the biology of many deep sea predatory organisms.
See, at that depth, there's very basically no light and it's freezing cold. Creatures need to conserve energy, so most things rarely swim, they're just gaping maws in the darkness. Hell, there's a species of anglerfish with the lure INSIDE the mouth. Mercifully, however, these creatures tend to be quite small, because again, lack of light and heat calls for extreme adaptation. This manifests in a number of ways.
One is extreme sexual dimorphism. The males are almost always little less than floating testicles waiting to find a female. He latches on and essentially just becomes part of her body.
There's one particular fish called the Stoplight Loosejaw Eel. It's almost perfect. It has a wonderful evolutionary adaptation behind its eyes, an organ that emits red light. In the darkness, red light is the first colour to be absorbed. As such, nothing down there can see red light. Nothing, except for the Stoplight Loosejaw. It hunts with a perfectly invisible spotlight nothing else can see. The Loosejaw part? It has developed a flap for a bottom jaw, a mere skeletal surrounding with teeth that gapes open held with a few strands of muscle. It's a skeleton-faced sea monster that sees with invisible light.
The other biological adaptation common to nearly every creature down there is the elastic stomach. Food is rare down there, so you get whatever you can get. Even if it's several times bigger than you. There is a species of eel called a Gulper Eel that lives down there and is almost nothing more than an open stomach with a tail. Gulpers have been found with substantially larger things in their stomachs, it will consume a fish so big that the meal begins decomposing within its stomach. Sometimes, the meal is so big, the stomach bursts open.
Fuck everything down there.
