A ocean biome called the abyss.

The abyss would be a very dark and deep biome in the deep sea. It would be super dark and the atmosphere is very silent and almost peaceful. There will be glowing jellyfish in many colors floating around. These will inflict poison on contact. The abyss will also have many sunken ships, bones, and some ruined portals. The abyss will also have a new block that looks like amber. The amber can be crafted into slabs, stairs, polished, and cut variants. In some caves in the abyss there will be giant pillars, one of these pillars has a hole in it. Throw a diamond in the hole and a new overworld boss will come into existence with a boss bar, the boss can replace the boss aspect of an elder guardian. The abyss can add beauty and much danger like your oxygen goes down faster in the abyss. I will like to hear your guys ideas on this idea, I think that this is a very Beautiful and dangerous biome and I think it has a spot in Minecraft.