Dead Bubble Coral
Dead Bubble Coral is the dead variant of Bubble Coral, formed when live coral is placed outside of water. It is one of five dead coral types, alongside Dead Tube, Brain, Fire, and Horn Coral. Dead Bubble Coral can be broken instantly with any tool. In Java Edition, a Silk Touch pickaxe is required to obtain it, while in Bedrock Edition, any Silk Touch tool can be used.
Once coral dies, it cannot be revived. It is mainly used as a building or decoration block. Like all dead coral types, it can be placed under a Note Block to produce a bass drum sound. In Java Edition, pistons can move dead coral as long as it remains supported in its new position.