Dark Prismarine

Dark Prismarine is an upcoming stone-like material that only will appear underwater in Water Dungeons. This block is a variant of Prismarine block.

World Generation
Dark Prismarine generates with the other Prismarine variants such as Prismarine Bricks and regular Prismarine in Water Dungeons. It is used to encase the 8 Gold Block treasure in every dungeon, as well as some other features.