Water World

{
  "biome": "minecraft:deep_ocean",
  "lakes": false,
  "features": false,
  "decoration": false,
  "layers": [
    {
      "block": "minecraft:bedrock",
      "height": 1
    },
    {
      "block": "minecraft:deepslate",
      "height": 64
    },
    {
      "block": "minecraft:stone",
      "height": 5
    },
    {
      "block": "minecraft:dirt",
      "height": 5
    },
    {
      "block": "minecraft:gravel",
      "height": 5
    },
    {
      "block": "minecraft:water",
      "height": 90
    }
  ],
  "structure_overrides": [
    "minecraft:ocean_monuments",
    "minecraft:ocean_ruins",
    "minecraft:shipwrecks"
  ]
}