Cave/Aquifer Water

Water in the caves/aquifers is spring water which is very clear and clean. So just like the overworld biomes I think the caves should have their own "water type".

-Most caves would have a super clear/clean spring water look (even more so than warm oceans)

-More toxic caves possibly the deep dark could have the opposite with gray/dark gray water in the biome

Its a small detail but it would make a large difference with the ambiance of the caves