The Underwater World[1] is a universe in the Multiverse that is covered in oceans and inhabited by sea creatures such as fish.
History[]
Escaping Scarlet Witch[]
Fearing for her life and trying to escape from Scarlet Witch, America Chavez opened up a portal through the Multiverse sending both her and Doctor Strange through it. While hurtling through, Chavez and Strange passed through the Underwater World. Due to the portal created by Chavez's powers, some fish from the Underwater World were transported to Alt New York.[2]