Coral

Corals are non-solid blocks that come in five variants: tube, brain, bubble, fire, and horn.

Dead corals are the dead variants of coral.

Obtaining
Corals can be mined instantly, but can only be obtained when mined with a Silk Touch enchanted tool.

Corals can be grown by using bone meal on a block underwater, but only in warm ocean biomes.

Dead coral is created when coral is placed out of water.

Natural generation
Corals naturally generate in coral reef structures found in warm ocean biomes.

Usage
Corals can be used as a building or decoration block, and can only be placed underwater. In 1.13.1, coral can be placed in air as well, but if this is the case it will quickly transform into dead coral.

In Bedrock Edition, they cannot be placed in one-block-high water.

Dead coral
In order for coral to stay alive, at least one of the blocks surrounding it must be water. If placed outside of water, it will transform into its respective dead coral after a few seconds.

Block data
In Bedrock Edition, corals have the following block data:

Trivia

 * In real life, corals are colonies of sessile (immobile) animals.

Gallery
Koralle Corail Coral Koraal (doorverwijzing) Koralowiec pt-br:Coral Коралл 珊瑚