When generating the world, caves, ravines and underwater ruins will be created below the water surface. When lava is generated in the former two, some lava will be converted to obsidian, and some to magma blocks which will generate bubble columns. All bubble columns will generate bubble column blocks until the bubble column is on the surface of the water space it’s in or a solid block is in the way of the would-be taller bubble column.
A player can enter a bubble column to replenish their air supply. A bubble column is destroyed when moved by a piston. When creating a bubble column, all blocks above must be source blocks. This requires either naturally generated water, or for the player to place a water source for each block they would like the column to reach.
Whirlpool bubble columns can be seen by air bubbles wandering downwards. They drag entities downwards. When a magma block is placed underwater, a whirlpool bubble column is generated. When riding a boat over a whirlpool it will begin to shake, and will sink if kept above the whirlpool for too long.
Upward bubble columns can be seen as vertically rising air bubbles. When soul sand is placed underwater, an upward bubble column is generated. An upward bubble column pushes entities upwards. The longer an object is rising through the bubble column the faster they will go. When the speed is high enough, the object (or player) will shoot out of the water by about 1 block.
- See also: Data values
In Bedrock Edition, bubble columns uses the following data values:
|0||The bubble column is a whirlpool.|
|1||The bubble column is upwards.|
- See also: Block states
|Determines whether the bubble column is a whirlpool or upwards.|
|November 18, 2017||Bubble Column were shown in a video clip during MineCon Earth.|
|1.13||18w07a||Added bubble columns.|
|18w08a||Bubble columns will now generate in underwater ravines.|
|18w09a||Bubble columns will now generate in underwater ruins.|
|1.5||beta 126.96.36.199||Added bubble columns.|
|beta 188.8.131.52||Bubble columns can now be toggled to look similar to Java Edition, but only for devices that can handle them.|
|Legacy Console Edition|
|TU69||1.76||Patch 38||Added bubble columns.|