Horn Coral Fan is a non-solid coral block found in warm ocean biomes as part of coral reefs. It is one of five coral fan variants, alongside Tube, Brain, Fire, and Bubble Coral Fans.

Horn Coral Fans can be mined instantly but can only be obtained with a Silk Touch tool. Without Silk Touch, breaking it destroys the block. Using bone meal in a warm ocean biome has a chance to generate coral fans.

Coral fans can be placed on the sides and top surfaces of blocks but not on the bottom. To stay alive, they must be waterlogged or have adjacent water. If placed outside of water, they immediately die in Bedrock Edition or after a few seconds in Java Edition, turning into Dead Horn Coral Fan, which cannot be revived. Horn Coral Fans cannot be pushed by pistons, as attempting to move them causes them to break. They are mainly used for decoration and underwater builds.