{
  "feature": {
    "type": "minecraft:disk",
    "config": {
      "state_provider": {
        "fallback": {
          "type": "minecraft:simple_state_provider",
          "state": {
            "Name": "minecraft:gravel"
          }
        },
        "rules": []
      },
      "target": {
        "type": "minecraft:all_of",
        "predicates": [
          {
            "type": "minecraft:any_of",
            "predicates": [
              {
                "type": "minecraft:matching_block_tag",
                "tag": "minecraft:dirt"
              }
            ]
          }
        ]
      },
      "radius": {
        "type": "minecraft:uniform",
        "min_inclusive": 7,
        "max_inclusive": 7
      },
      "half_height": 0
    }
  },
  "placement": [
    {
      "type": "minecraft:count",
      "count": 100
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR_WG"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:matching_fluids",
        "fluids": "minecraft:water"
      }
    }
  ]
}