Dead Bubble Coral Block is the gray, lifeless version of the bright bubble coral block, retaining its bubbly texture but losing its vibrant purple color. It forms when a live bubble coral block is placed outside of water or mined without Silk Touch, drying out after a few seconds.

It serves a decorative purpose, often used in ruins, desolate reefs, or underwater graveyard builds thanks to its bleached, worn-out look. Dead bubble coral blocks can be broken with any pickaxe, always dropping themselves. When placed beneath a note block, they produce a 'bass drum' sound, making them useful for custom musical setups as well.