
There are a lot of mud puddles in Subnautica 2 and It would be cool if some of the mud puddles in a certain biome are different. Like they are living and they drag you down when you turn on the lights of your vehicle just like the single cell landscape but. You could also make it so any creature with bioluminescence try to avoid the area and make it so any creatures there are completely pitch black.

Also it would work really good as an endgame biome that you would strictly go there for a rare material called black goop that would be needed for endgame craftables. As well there can be creatures down there. You can scan that are completely pitch black that give you a unique biomod that makes it so you have night vision like the creatures would since they cannot admit light to see because. they would die.making it a very good park for exploring dark areas like the single cell landscape.

Oh and also if you use the passive ability bioluminescence it will drag you in.