{
  "feature": "minecraft:seagrass_tall",
  "placement": [
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:count",
      "count": 48
    },
    {
      "type": "minecraft:offset",
      "x": {
        "type": "minecraft:trapezoid",
        "max": 7,
        "min": -7,
        "plateau": 0
      },
      "y": {
        "type": "minecraft:trapezoid",
        "max": 0,
        "min": 0,
        "plateau": 0
      },
      "z": {
        "type": "minecraft:trapezoid",
        "max": 7,
        "min": -7,
        "plateau": 0
      }
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:matching_blocks",
        "blocks": "minecraft:water"
      }
    },
    {
      "type": "minecraft:biome"
    }
  ]
}