{
	"feature": "minecraft:disk_gravel",
	"placement": [
		{
			"type": "minecraft:in_square"
		},
		{
			"heightmap": "OCEAN_FLOOR_WG",
			"type": "minecraft:heightmap"
		},
		{
			"predicate": {
				"fluids": "minecraft:water",
				"type": "minecraft:matching_fluids"
			},
			"type": "minecraft:block_predicate_filter"
		},
		{
			"type": "minecraft:biome"
		}
	]
}