The Black Waters

In a future update, there will be a new biome that has an ocean goes almost down to bedrock. It's going to be a rare biome, close enough to being as rare as finding an Woodland Mantion. The Trench will be a huge underwater canyon, probably 750-1500 blocks wide by default. There will be no fish, Elder/Guardians and no drown. There will only be natural spawning Glow Squid. And with that comes with a new boss mob, it would be called the Colossal Squid. It would be a 15 block long, 4/4  block wide squid. It will have a very dark blue color to camouflage with the deep dark ocean. 1-3 of the mob will scout The Trench depending on the size of The Trench.it will have two thirds the health as the Warden. Once one sees you, it will circle you while you dont know, The only way to know is the sounds it makes or if you have night vision which will now let you see farther in the water. It will eventually decide to attack you which does half the damage a Warden deals, and glow like Glow Squids. Once you kill it, it will give you the new item, The Dark Pearl. In the center of The Trench, there will be a small structure, the size of an pillager outpost, a shrine. At the middle of the shrine, you will find a special book. The book will give you a clue on how to use it. If you find a lectern and if you put The Dark pearl on the book it will turn into a enchanted book, put it on a trident and it will become a new weapon, It will enhance all of the trident enchants.