Minecraft Wiki
Minecraft 18w07a
Java Edition 18w07a.png

Java Edition



Release date

February 14, 2018

Snapshot for



Client (.json)

Protocol version


Data version


18w07a[1] is the eighteenth snapshot released for Java Edition 1.13. It is the first snapshot to include the Update Aquatic features, although the decision to include them in 1.13 happened two weeks prior. This snapshot contains more gameplay additions than the previous snapshots for 1.13, which mostly added or modified commands.



  • Added stripped logs, a smoother log variant.
    • Created by right clicking with an axe on a log.
    • Act as regular logs, and can still be used to craft planks.
  • Added bubble columns.
    • Created by magma blocks or soul sand in water at least 2 blocks deep.
    • Magma blocks columns push entities down: they will stop items from floating up in water and sink boats.
    • Soul sand columns push entities up.
  • Added kelp blocks as well as seagrass, which were called "Sea grass" at the time.
    • Can only be placed underwater, requiring at least one water block above it.
      • Can be placed on dry land by using the /setblock command.
    • Generate in oceans.
    • Can grow multiple blocks high.
    • Have animated textures.
    • Sea grass also comes in a tall variant.
    • Sea grass can be generated when right clicking any block underwater.
    • Kelp can be smelted into dry kelp.
  • Added dried kelp blocks.
    • Smelts 20 items when used as fuel in a furnace.
  • Added prismarine stairs and slabs.
  • Added turtle eggs
    • Stepping on turtle eggs will break them.
      • Zombies and zombie pigmen will intentionally step on turtle eggs.




  • Added Loyalty.
    • Goes up to level III.
    • Used on tridents to make it return when thrown.
  • Added Impaling.
    • Goes up to level V.
    • Used on tridents to deal more damage to sea creatures.
  • Added Riptide.
    • Goes up to level III.
    • Used on tridents to launch the player when thrown while in water or rain.
  • Added Channeling.
    • Only has one level.
    • Used on tridents to summon a lightning bolt on impact with a mob during storms.
      • Requires the target mob to be directly under an open sky and in a biome where it is raining.
  • When sprinting while swimming, the player will now go much faster than normal swimming, and rapidly dive down to the lowest point in the body of water.
    • The player's hitbox is only as large as 0.6×0.6 blocks (same as while flying with an elytra) while doing this
    • Vertically, the player can fit through a one block gap like this
      • If the ceiling block is solid, movement is very slow while in such a small space, for any other ceiling block like a bottom slab movement speed is as normal


  • Added the minecraft:bubble_column_up, minecraft:bubble_pop, minecraft:current_down, and minecraft:squid_ink particles.
  • Added the HomePosX, HomePosY, HomePosZ, TravelPosX, TravelPosY, TravelPosZ, and HasEgg NBT tags for turtles.
  • Added the AX, AY, AZ, and Size NBT tags for phantoms.
  • Added the time_since_sleep statistic.
    • Used by phantoms.
    • Reset when the player leaves their bed.
  • Added the minecraft:water_hacked, minecraft:slabs, and minecraft:stairs block tags.
    • Blocks in the minecraft:water_hacked tag will render in water as if any non-filled space in the block model was water.
  • Added the minecraft:acacia_logs, minecraft:birch_logs, minecraft:dark_oak_logs, minecraft:jungle_logs, minecraft:oak_logs, and minecraft:spruce_logs block and item tags.



  • Squid now shoot ink in response to being attacked.
  • Zombies, skeletons, ocelots and wolves will naturally attack baby turtles, and zombies and zombie pigmen will seek out and trample turtle eggs.

Non-mob entities[]

  • Items in water now float up.

World generation[]

  • In the Nether, vertical air cavities — stretching from bedrock level to as far as Y=35, and filled with lava from bedrock level to Y=10 – now occur in chains across the bottom of the Nether, often forming extensive ravines.


12 issues fixed
From released versions before 1.13
  • MC-11208 – The big tree generator handles tree height variable incorrectly.
  • MC-102440 – Large oak trees not spawning or spawning abnormally in forest.
From the previous development version
  • MC-124890 – Can't insert charcoal into furnace.
  • MC-124897 – "Balloon oak" tree variant generates upside down, with often only stumps visible on the surface.
  • MC-124902 – Furnace recipes work in crafting interfaces and interfere with crafting recipes.
  • MC-124903 – Random crash in snow biomes: java.lang.NullPointerException: Exception ticking world
  • MC-124913 – Horses, rabbit, parrot, llamas and sheep generate with default color / variant only.
  • MC-124916 – Chorus plant generation broken.
  • MC-124930 – The game crashes when pressing "show craftable" in the furnace recipe book.
  • MC-124952 – Large oak trees fail to generate in all biomes with the new generator.
  • MC-125016 – Debug world does not generate.
  • MC-125047 – World generator not fully cleaned before making new world.


Video made by slicedlime:


  1. "Minecraft Snapshot 18w07a" – Minecraft.net, February 14, 2018