Brain Coral Fan is one of five flat coral fan variants in Minecraft that generates naturally inside coral reef structures across warm ocean biomes. The block forms the signature pink, brain-like pattern recognizable on the seabed, and unlike solid coral blocks the fan occupies a thin non-solid layer attached to the sides of adjacent blocks. Players cannot craft a Brain Coral Fan at a crafting table; the only sources are natural generation and bone meal applied underwater inside a warm ocean, where each use has a chance to grow new coral fans nearby.

To collect a Brain Coral Fan, break the block with a pickaxe, axe, or any tool enchanted with Silk Touch — without Silk Touch the block simply drops nothing. The fan has hardness 0 and blast resistance 0, so it breaks instantly to any tool and cannot survive explosions. Brain Coral Fan must stay in water: in Java Edition it turns into a Dead Brain Coral Fan after 3 to 4.95 seconds out of water, and in Bedrock Edition it dies the moment the water is removed. The five coral fan variants are tube, brain, bubble, fire, and horn, all added in Java Edition 1.13 and Bedrock Edition 1.4.0.