{
  "feature": "minecraft:mangrove_vegetation",
  "placement": [
    {
      "type": "minecraft:count",
      "count": 25
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:surface_water_depth_filter",
      "max_water_depth": 5
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "OCEAN_FLOOR"
    },
    {
      "type": "minecraft:biome"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:would_survive",
        "state": {
          "Name": "minecraft:mangrove_propagule",
          "Properties": {
            "age": "0",
            "hanging": "false",
            "stage": "0",
            "waterlogged": "false"
          }
        }
      }
    }
  ]
}