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It has been suggested that this page be moved to Guides/Update Aquatic or [{{fullurl:The "1.13" version is just the first release of the Update Aquatic (also including 1.13.1 and 1.13.2), where as this page details all of the Update Aquatic releases|redirect=no}} The "1.13" version is just the first release of the Update Aquatic (also including 1.13.1 and 1.13.2), where as this page details all of the Update Aquatic releases].
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This guide is a simplified overview of all the changes in Update Aquatic (1.13 releases), which assumes at least some familiarity with World of Color Update (1.12 releases).

Mobs

New

1.13 adds several new mobs to the game, here is a list of the mobs to look out for:

Name Image Habitat Drops Notes
Dolphin
Dolphin
All oceans except for Frozen oceans
  • Like Wolves the dolphin will attack any player that attacks first.
  • When fed raw cod dolphins will guide the player to the nearest ocean ruin or shipwreck.
  • Players receive the Dolphin's Grace effect when near dolphins, the effect allows players to swim significantly faster underwater.
Turtle
Turtle
Any beaches except for cold beaches
  • Turtles can be bred with seagrass, one turtle will then travel back to its home beach to lay its eggs, regardless of the distance.
  • Baby turtles will drop one scute when they grow into an adult.
Fish
  • Cod – cold, warm, and lukewarm oceans, including deep variants.
  • Salmon – Cold and frozen oceans, and normal and frozen rivers.
  • Tropical fish and Pufferfish – Lukewarm and warm oceans.
  • Each type drops one fish item of the same type as itself. All tropical fish variants drop the same tropical fish item.
  • Bone Meal (0–1)
  • Fish will group together with other fish of the same type, forming small schools.
  • All fish types can be captured with a bucket of water. Tropical fish will retain their type when captured and placed again.
Drowned
Drowned
Drowned spawn in all ocean, swamp and river biomes. Additionally, groups of drowned will spawn in ocean ruins when the structures are first generated.

Spawned Equipment

  • During the day drowned will stay on the ground underwater, ignoring players on land no matter how close they may get.
Phantom
Phantom
Phantoms spawn at night and during thunderstorms high above players who are below sea level, have no obstructions above them, and have not entered a bed for at least three ingame days.
  • Phantoms are the fastest mob in the overworld, players are unable to outrun them. A good strategy is to obstruct their path, since they fly up if they collide with any block during an attack.
  • Phantoms will not spawn if the player has a solid block above them, meaning they will not spawn around players underground or within enclosed structures. Additionally, they will not spawn if the player is below sea level.
  • Sleeping through the night is not actually required, the statistic that controls their spawning is reset when the player leaves a bed, so simply entering and then leaving a bed is enough.

Changed

Name Image Change
All undead mobs
  • All undead mobs, excluding the phantoms, will now sink in water as opposed to floating to the surface.
  • Skeleton horses can now be ridden underwater.
  • Zombies, zombie villagers, husks, drowned, and zombie pigmen will actively seek out and trample turtle eggs.
  • Additionally, zombies, zombie villagers, husks, drowned, and skeletons will actively seek out and attempt to kill baby turtles.
Husk
Husk

Baby Husk
  • Husk turn into zombies when underwater for a period of time.
Squid
Squid
  • Squid now release ink when injured by the player.
  • Squid now only spawn in rivers, oceans, and beaches.
Zombie
Zombie

Baby Zombie
  • Zombies and baby zombies convert into drowned after being underwater for at least 30 seconds.
  • Baby zombies now burn in daylight like other undead mobs.
Skeleton
Skeleton

Blocks

New

Name Image Acquired Tool Required Uses
Wood Oak WoodSpruce WoodBirch WoodJungle WoodAcacia WoodDark Oak Wood
Ingredients Crafting recipe
Matching Log
Can be broken with any tool as well as by hand, but fastest with an axe.
  • Can be used as a decorative block.
  • Can be crafted into planks of the same wood type.
Blue Ice
Blue Ice
Ingredients Crafting recipe
Packed Ice

  • Additionally blue ice can be found naturally as part of icebergs.
Can be broken with any pickaxe enchanted with Silk Touch.
  • Can be used as a decorative block. Like packed ice, blue ice will not melt.
  • Blue ice has the lowest friction compared to any other block, including packed and regular ice.
Conduit
Conduit
Ingredients Crafting recipe
Nautilus Shell +
Heart of the Sea

Can be broken with any tool. Conduits will give the Conduit Power status effect when powered.
See Tutorials/Conduits for more information.
Coral, Dead Coral,
Coral Fan,
Dead Coral Fan,
Coral Block,
and Dead Coral Block

Tube CoralBrain CoralBubble CoralFire CoralHorn Coral
Dead Tube CoralDead Brain CoralDead Bubble CoralDead Fire CoralDead Horn Coral
Tube Coral FanBrain Coral FanBubble Coral FanFire Coral FanHorn Coral Fan
Dead Tube Coral FanDead Brain Coral FanDead Bubble Coral FanDead Fire Coral FanDead Horn Coral Fan
Tube Coral BlockBrain Coral BlockBubble Coral BlockFire Coral BlockHorn Coral Block
Dead Tube Coral BlockDead Brain Coral BlockDead Bubble Coral BlockDead Fire Coral BlockDead Horn Coral Block

  • Coral, coral fans, and coral blocks can be found in coral reefs.
  • Coral and coral fans can be obtained by applying bone meal to dirt, coarse dirt, sand, red sand, or gravel underwater in a warm ocean biome.
  • Dead coral, dead coral fans, and dead coral blocks can be obtained by placing their living variety in any area not directly adjacent to water.
  • Alternatively dead coral blocks can be obtained by being mined with a pickaxe not enchanted with Silk Touch.
  • Coral, dead coral, coral fans, and dead coral fans can be broken with any tool as well as by hand.
  • Coral blocks can be mined with any pickaxe enchanted with Silk Touch.
  • Dead coral blocks can be mined with any pickaxe.
Can be used as decorative blocks.
Dried Kelp Block
Dried Kelp Block
Ingredients Crafting recipe
Dried Kelp

Can be broken by hand.
  • Can be crafted into nine dried kelp.
  • Can be used as a fuel in a furnace, will smelt twenty items.
Kelp Can be obtained by breaking kelp plants. Can be broken by any tool as well as by hand.
  • Can be broken to obtain kelp items.
Prismarine Stairs,
Dark Prismarine Stairs,
and Prismarine Brick Stairs

Prismarine StairsDark Prismarine StairsPrismarine Brick Stairs

Ingredients Crafting recipe
Prismarine or
Dark Prismarine or
Prismarine Bricks
PrismarinePrismarinePrismarinePrismarinePrismarinePrismarine
Prismarine Stairs
Can be broken with any pickaxe. Can be used as decorative blocks.
Prismarine Slab,
Dark Prismarine Slab,
and Prismarine Brick Slab

Prismarine SlabDark Prismarine SlabPrismarine Brick Slab

Ingredients Crafting recipe
Prismarine or
Dark Prismarine or
Prismarine Bricks
PrismarinePrismarinePrismarine
Prismarine Slab
Can be broken with any pickaxe.
  • Can be used for decoration.
Pumpkin
Pumpkin
  • Now generates throughout the world without carved faces on any sides.
  • Can be grown using pumpkin seeds.
Can be broken with any tool as well as by hand, but fastest by axe.
  • Can be used for everything the pumpkin could be used for previously, except for being worn.
Purple Shulker Box
Purple Shulker Box
Ingredients Crafting recipe
Shulker Box +
Purple Dye

Can be broken with any tool as well as by hand.
  • Used in the same way as all other Shulker boxes.
  • Has a darker purple color than the non-dyed variant.
Sea Pickles

Sea PickleFile:Two Sea Pickles.pngFile:Three Sea Pickles.pngFile:Four Sea Pickles.pngFile:Dry Sea Pickle.pngFile:Two Dry Sea Pickles.pngFile:Three Dry Sea Pickles.pngFile:Four Dry Sea Pickles.png

  • Can be found in warm oceans as well as part of coral reefs.
  • Can be grown by placing one sea pickle on a coral block underwater and applying bonemeal to the sea pickle.
Can be broken with any tool as well as by hand.
  • Can be used for decoration.
  • Will give off 3 light levels for every sea pickle in the block while underwater, will not give light while outside of water.
Stripped Log Stripped Oak LogStripped Spruce LogStripped Birch LogStripped Jungle LogStripped Acacia LogStripped Dark Oak Log Can be obtained by right clicking any log with any tier of axe, this will consume one durability on the axe. Can be broken with any tool as well as by hand, but fastest by axe.
  • Can be used as a decorative block.
  • Can be crafted into planks of the same wood type.
Turtle Eggs

File:Turtle Egg1.pngFile:Turtle Egg2.pngFile:Turtle Egg3.pngFile:Turtle Egg4.pngFile:Turtle Egg5.pngFile:Turtle Egg6.png

Can be obtained by breeding two turtles Can be broken by any pickaxe enchanted with Silk Touch.
  • Can be used as a decorative block.
  • Will hatch into baby turtles.

Changed

Name Image Change
All semi-transparent blocks. All semi-transparent blocks can now have water placed within them by right clicking them with a water bucket.
Carved pumpkin
Carved Pumpkin
  • Name changed from pumpkin to carved pumpkin.
  • Now obtained by using shears on a pumpkin to carve the face into a side.
  • Can no longer be used to craft pumpkin pie.
Shulker Box
Shulker Box
  • Purple shulker box is now a regular shulker box
  • Purple shulker box can be crafted with a shulker box and purple dye.
  • Shulker boxes can now be undyed with cauldrons, similar to leather armor.
Packed Ice
Packed Ice
  • Packed ice can now be crafted with nine ice.

Items

New

Name Image Obtaining Uses
Buried Treasure Map Can be found in underwater ruins loot chests. Can be used to find buried treasure chest.
Heart of the Sea
Heart of the Sea
Can be found in all buried treasure chests in stacks of one. One of the ingredients for crafting the conduit.
Kelp and
Dried Kelp
Kelp

Dried Kelp
  • Kelp can be found growing underwater in all ocean biomes.
  • Dried kelp is obtained by smelting kelp in a furnace, or by placing a dried kelp block in a crafting grid and crafting it back into nine dried kelp.
  • Kelp can be smelted in a furnace to obtain dried kelp.
  • Dried kelp can be eaten to regain one hunger point. It can be eaten faster than any other food.
  • Dried kelp can also be crafted into a dried kelp block.
Nautilus Shell
Nautilus Shell
  • Drowned will occasionally spawn holding a nautilus shell in their off-hand, which they will drop when killed.
  • Can be caught as a treasure item from fishing.
One of the ingredients for crafting the conduit.
Phantom Membrane
Phantom Membrane
Dropped by phantoms when killed.
Scute
Scute
Dropped by baby turtles when growing into an adult. Can be used to craft a turtle shell.
Trident
Trident
Can be dropped by drowned as part of there naturally spawned equipment.
  • Used as a melee or ranged weapon.
  • Also the most effective weapon underwater.
  • When enchanted with Channeling, it can be used to turn creepers into charged creepers during thunderstorms.
Turtle Shell
Turtle Shell
Ingredients Crafting recipe
Scute

Changed

Name Image Changes
Elytra
Elytra

Elytra now requires the phantom membrane to be repaired.

Potions

New

Name Ingredients Brewing recipe
Potion of Slow Falling Phantom Membrane +
Awkward Potion



Potion of the Turtle Master Turtle Shell +
Awkward Potion




Biomes

New

Name Internal id Image Description Structures
Cold Ocean minecraft:cold_ocean
Cold Ocean
Like the frozen ocean, this ocean variant has a gravel seabed, with the occasional patch of sand or dirt. Additionally this ocean biome has dark indigo water. It is home to kelp, seagrass, cod, salmon, and dolphins.
Cold Deep Ocean minecraft:deep_cold_ocean
Deep Cold Ocean
Cold deep oceans are the same as cold oceans, with the exception that they are twice as deep, as well having the potential to generate ocean monuments.
Frozen Ocean minecraft:frozen_ocean
Frozen
A partially frozen area of ocean, with large, yet broken up, sheets of ice covering the water. This variant of ocean has a gravel seabed and is home to kelp, seagrass, squid, salmon, stray, and polar bears.
  • Cold underwater ruins
  • Shipwrecks
  • Icebergs
Frozen Deep Ocean minecraft:deep_frozen_ocean
Deep Frozen Ocean
Essentially the same as the frozen ocean biome, but it's deeper and can generate ocean monuments.
  • Cold underwater ruins
  • Shipwrecks
  • Icebergs
Lukewarm Ocean minecraft:lukewarm_ocean
Lukewarm Ocean
This ocean variant can be recognized by its light teal water and sandy seabed. It is home to kelp, seagrass, pufferfish, dolphins, tropical fish, and cod.
  • Warm underwater ruins
  • Shipwrecks
Deep Lukewarm Ocean minecraft:deep_lukewarm_ocean
Deep Lukewarm Ocean
Similar to the lukewarm ocean, but twice as deep and can generate ocean monuments.
  • Warm underwater ruins
  • Shipwrecks
Warm Ocean minecraft:warm_ocean
Warm Ocean
An ocean variant with light green water at the surface. It can contain coral reefs, sea pickles, seagrass, dolphins, tropical fish and pufferfish.
Small End Islands minecraft:small_end_islands
Small End Islands
This biome is part of the outer End islands. They're between the bigger islands, which can be accessed easily by End gateway portals.

Changed

Nearly all the biomes were renamed, here is a list of the new biome names versus the old names, note that the debug screen will no longer show the biome name but will rather show the internal biome id:

For more information see 1.13/Flattening.

Water

The physics for water has also been changed, and the way the player interacts with water has also changed.

Swimming

There is now an actual swimming animation used by the player while underwater, this can be activated by sprinting underwater. This also allows the player to move in any direction they are looking including down. Players who cannot sprint, i.e. are too hungry to sprint, cannot swim. Crouching underwater also allows the player to descend at a faster rate.

While swimming, players can go through one block gaps similar to when using an elytra.

Item and Experience

Items and experience orbs now float to the surface of water rather than sink, this makes dying underwater easier to deal with since all of the player's items will be waiting at the surface. This also allows for easy vertical item transportation.

Bubble Columns

For more detailed information see Bubble Columns.

Magma and soul sand now make bubble columns when placed underwater. Magma will naturally generate in underwater ruins and where underwater ravines meet lava, while soul sand does not currently generate naturally in oceans. Players are able to breath while in bubble columns.

Magma bubble columns will pull things down to the bottom, this includes items, players, mobs, and boats. Soul sand bubble columns will push all entities, including players, to the surface at a very fast rate.

Breath

The breath meter no longer instantly refills when entering air from underwater, this means it is no longer possible to instantly refill the air meter with a torch while underwater.

Vision

Water has been given unique colors depending on the biome they are in.

Water is also now clearer, and the longer the player is underwater the clearer it becomes.

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