Attribute	Value
Version
Health points	10 ( )
Behavior	Passive
Mob ID	species:limpet

Limpets are a shy mollusk found all across the overworld. Their unique shells can occasionally have minerals on them. The type of mineral depends on the limpet's environment. These minerals can be extracted, but not before chasing the limpet down. Designed by GLaDOS edition.

Limpets spawn naturally on stone, granite, diorite, andesite, tuff, and deepslate. They can spawn in all the biomes listed in the #limpet_spawns tag except biomes in the #species:without_limpet_spawns tag. They require a light level of 0, and a skylight of 0 in order to spawn.

Limpet type depends on various spawning conditions.

Limpet Type	Y-Level	Biome	Spawn Weight	Mod Exclusive
Emerald	Above 64 30 to 64 16 to 30 16 to 30	#minecraft:is_mountain #minecraft:is_mountain #minecraft:is_mountain ANY	80 30 20 5	No
Coal	Above 64 30 to 64 16 to 30 Above 30 16 to 30 Below 16	#minecraft:is_mountain #minecraft:is_mountain #minecraft:is_mountain ANY ANY ANY	20 50 60 80 65 45	No
Lapis Lazuli	30 to 64 16 to 30 Above 30 16 to 30 Below 16	#minecraft:is_mountain #minecraft:is_mountain ANY ANY ANY	20 10 20 20 20	No
Amethyst	16 to 30	ANY	10	No
Diamond	Below 16	ANY	35	No
Spinel	-32 to 64	ANY	50	Yes, (Caverns & Chasms)
Uranium	ANY	alexscaves:toxic_caves	10	Yes, (Alex's Caves)

#species:limpet_spawns by default comprehends all the overworld biomes and toxic caves from Alex's Caves.

#species:without_limpet_spawns by default only comprehends the deep dark.

#minecraft:is_mountain refers to the meadow, frozen peaks, jagged peaks, stony peaks, snowy slopes and cherry grove.

• 0-5 experience points when killed by a player or tamed wolf. Only a limpet that has lost its shell can be killed.

Limpets with minerals on them need to be struck with the appropriate 3 tool times in order to extract them. Fortune affects the amount of items dropped.

The appropriate tool depends on the ore block specified in the limpet ore data file.

Item	Quantity (Default)	Quantity (Fortune I)	Quantity (Fortune II)	Quantity (Fortune III)	Tool
Emerald	4 to 8	5 to 9	5 to 10	6 to 12	Iron or higher
Coal	12 to 24	14 to 28	16 to 31	17 to 35	Wood or higher
Lapis Lazuli	8 to 16	9 to 18	10 to 21	12 to 23	Wood or higher
Amethyst	4 to 8	5 to 9	5 to 10	6 to 12	Wood or higher
Diamond	3 to 6	3 to 7	4 to 8	4 to 9	Iron or higher
Spinel	3 to 6	3 to 7	4 to 8	4 to 9	Stone or higher
Uranium	4 to 8	5 to 9	5 to 10	6 to 12	Iron or higher

A limpet with a shell will resist all non-pickaxe attacks up to 12 hp. Limpets are capable of hiding in their shells, and they will do so when hit. Limpets that are hiding in their shell can be walked on, similar to a shulker.

When a player holds a pickaxe in their hand, a limpet will sit in place and quiver, while making whimpering noises. Striking them breaks their shell by a stage and initiates a chase, where the limpet will attempt to run away from the player. The pickaxe will enter a 4 second cooldown ( 80 ticks ) for every successful hit in survival mode.

Limpet shells have 3 breaking stages, after which the shell will completely break, leaving the limpet exposed and dropping its respective minerals. A partially broken shell can be repaired with its respective minerals. A limpet that has been repaired will not despawn.

Limpet Type	Repair Mineral
None	Bonemeal
Emerald	Emerald
Coal	Coal
Lapis Lazuli	Lapis Lazuli
Amethyst	Amethyst
Diamond	Diamond
Spinel	Spinel
Uranium	Uranium

Using a silk touch pickaxe on the limpet will remove only the minerals, leaving the shell intact. It will also grant the player an advancement.

Icon	Advancement	In-game description
	Gold Digger	Break the Shell of a Limpet to collect its Gem
	The Conchequences of Hiding	Preserve a Limpet's Shell by breaking it with Silk Touch

Limpet ores are completely data driven and customizable with datapacks, to add your own ore you have to make a .json file in the gameplay/limpet_ores folder of your datapack

they follow this template:

{
  "id": "species:nether_quartz",
  //Name, this is used for texture lookup.
  //For example this limpet's texture would be 
  //"assets/species/textures/entity/limpet/ores/nether_quartz.png"
  "item": "minecraft:quartz", 
  //The item it will drop.
  "block": "minecraft:nether_quartz_ore", 
  //The block it will refer to when playing sounds 
  //or looking for the appropriate tool.
  "maxCount": 6,
  //The maximum amount of item dropped, 
  //usually it drops around 3/4 of this
  "spawnWeight": 50,
  //Spawning weight
  "maxSpawnHeight": 64,
  //Maximum Y level at which it can spawn
  "minSpawnHeight": -32,
  //Minimum Y level at which it can spawn
  "location": "minecraft:nether_wastes"
  //This can be either a biome or a biome tag (indicated by the # sign)
  //remember that the location must also be in the #limpet_spawns tag and
  //mustn't be in the #without_limpet_spawns tag.
}

Limpets named Gary will take on a unique skin.