Dark biome

I think most players can relate, that right now the biomes are bright. It is great having colorful biomes and plenty of sea creatures. But they are not really dark and you can see really really far, even at night, kinda making frontlights, flashlight or the spotlight obsolete.
I am sure that darker biomes are going to be added later to the game, but I just wanted to suggest a pitch black biome/cave where seeing is basically impossible without artificial lights, except maybe a few biolumiscent algae/creatures (Anglerfish (: ) This could bring back the thrilling exploring aspect from the first two subnautica games.

i think that could be really interesting, maybe an area with some compound or plankton like creatures filling the water making light unable to pass through. I like the idea of just swimming up to almost a shadow wall that envelopes me as i go through