Horn Coral Fan is the flat, fan-shaped yellow coral that grows attached to coral reef structures in warm ocean biomes. The block was added to Minecraft in Java Edition 1.13 (snapshot 18w11a) and Bedrock Edition 1.4.0, alongside the four other coral colors — tube, brain, bubble, and fire. Horn Coral Fan breaks instantly with any tool, but drops only when mined with a Silk Touch enchanted pickaxe, shears, or another Silk Touch tool; without Silk Touch the block simply vanishes. The renewable tag applies because applying bone meal to coral blocks in a warm ocean can generate fresh Horn Coral Fan colonies, making the live block farmable.

Outside of water, Horn Coral Fan dries out and turns into its gray, dead counterpart — in Java Edition this happens after roughly 3 to 5 seconds, while Bedrock Edition kills the block the instant water is removed. The dead variant is permanent: no mechanic in Minecraft reverts dead coral back to its live, colored form, so the live yellow fan is the only version worth placing in builds. Builders use Horn Coral Fan for vivid yellow underwater accents in aquariums, reef-themed corridors, and tropical port walls, pairing the warm tone with Prismarine and Sea Lanterns. A hardness of 0 and a blast resistance of 0 mean creeper explosions and TNT clear coral reefs effortlessly, so protect Horn Coral Fan with surrounding terrain or glass.