Coral Block

A coral block is a solid block that comes in five variants: tube, brain, bubble, fire, and horn.

A dead coral block is a dead variant of a coral block. These blocks are always grey.

Breaking
Coral blocks can be obtained only with a pickaxe enchanted with Silk Touch; if mined with a pickaxe not enchanted with Silk Touch, they drop the respective dead coral block. Dead coral blocks can be obtained with any type of pickaxe.

Natural generation
Coral blocks and their dead variants naturally generate in coral reef structures. These are found in warm oceans.

Trading
One coral block can be bought from wandering traders for 3 emeralds.

Usage
Coral blocks and their dead variants can be used for building or as decoration blocks.

Sea pickle farm blocks
If sea pickles are planted on coral blocks, using bone meal on the sea pickles increases the number of sea pickles and creates more sea pickles on nearby coral blocks. Specifically, they can spread to the original sea pickle's level or one level below, out to a horizontal taxicab distance of 2. This is the only way to farm renewable sea pickles.

Dead coral blocks
In order for a coral block to stay alive, at least one of the six directly adjacent blocks must be water. If placed outside of water, it transforms into its respective dead coral block after a few seconds &mdash; a grayscale version of the coral block. A coral block still dies if the Gamerule  is set to 0.

Note Blocks
All types of coral blocks and dead coral block can be placed under note blocks to produce "bass drum" sounds.

ID




Metadata
$$, coral blocks have the following block data:

Trivia

 * After players had placed 10 million coral blocks underwater $$, Mojang donated US$100,000 to The Nature Conservancy to protect and restore coral reefs around the world.