What is the underground water biome in calamity?

Ninjabattler - Terraria Calamity Mod, Hardmode

2023 Calamity biomes and never

Terraria Calamity Mod. ENG/ESP

Steam Community :: Guide :: Everything You Need To Know About The Calamity Mod

So Is this normal for this biome? (Calamity mod) : r/Terraria

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Arsenal Labs - Calamity Mod Wiki

Not a suggestion. I just really wish ocean biomes n sea caves had an update to include an underground ocean reef using the new coral blocks and shell piles in these areas

Terraria Calamity Mage

Biome backgrounds - Calamity Mod Wiki

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Biomes - Calamity Mod Wiki

How To Find Shimmer Liquid In Terraria