What is bubble coral fan?
Bubble coral fan is the wall-mounted version of bubble coral, one of the five coral types added to Minecraft in the Update Aquatic. It’s a decorative block that grows naturally on coral reefs in warm ocean biomes and comes in a deep purple color that pops against the sand and water around it.
It’s small, flat, and useful for decoration only, but it’s one of the prettier blocks in the game and a staple of underwater builds. The catch is that it needs to be touching water at all times, or it dies and becomes dead bubble coral fan, which loses its color permanently.
How to get bubble coral fan
Bubble coral fan only spawns in warm ocean biomes, and only on top of coral reefs. You won’t find it in any other biome. Not lukewarm oceans, not deep oceans, and never inland. To pick one up, you need a tool enchanted with Silk Touch. Without Silk Touch, mining the block destroys it entirely and you get nothing.
The fastest way to find one:
- Locate a warm ocean biome (orange-tinted water, sandy floor)
- Look for a coral reef structure, which is a large rocky formation with bright corals on top
- Bring a tool with Silk Touch (a pickaxe, axe, shovel, or shears all work)
- Mine the bubble coral fan and pick it up immediately. Loose coral can despawn if it sits in the water uncollected for too long
Bubble coral fan is not available through trading, mob drops, or natural generation outside of warm oceans. If you want a renewable source, you’ll need to either set up a coral biome via custom worlds or use creative mode.
Bubble coral fan vs the rest of the coral family
Each coral type in Minecraft has three forms: the coral itself (a small plant-like growth), the coral block (a solid, full-size cube), and the coral fan (the flat, leafy version). Bubble coral fan is the flat fan version of bubble coral.
The five coral types and their colors:
| Coral type | Color |
|---|---|
| Tube | Blue |
| Brain | Pink |
| Bubble | Purple |
| Fire | Red |
| Horn | Yellow |
Bubble coral specifically is the purple one. The fan version behaves identically to the other coral fans: same water requirement, same silk touch rule, same biome restriction.
How bubble coral fan works
Bubble coral fan has a few mechanics worth knowing if you plan to build with it.
The water requirement
Like all live coral, bubble coral fan needs to be touching at least one water source block, water flow block, or another waterlogged block to stay alive. If you place it next to dry air, it dies within a few seconds, sometimes immediately, sometimes after a small delay. Once dead, it becomes dead bubble coral fan, which is gray and never recovers.
The simplest way to keep it alive in a build is to waterlog it. Place the fan, then right-click it with a water bucket. The fan stays alive even if there’s no water immediately adjacent, because it now contains its own water source.
Placement options
Bubble coral fan can sit on top of any solid block (becoming a flat fan on the ground), or on the side of a block (becoming a wall fan that sticks out horizontally). The wall version is useful for decorating cave walls, the sides of pillars, or the inside of fish tanks.
It cannot be placed on the bottom of a block (no upside-down fans), and you can’t stack one fan on top of another. One per block face.
What it does NOT do
Bubble coral fan does not produce bubble columns. That’s a common mix-up. Bubble columns come from magma blocks underwater, not from bubble coral. The “bubble” in bubble coral is a reference to the rounded, bubbly look of the coral itself.
The block has no collision and you can walk through it freely. It also doesn’t block water, so it won’t interfere with fish or aquatic mobs swimming nearby.
Best uses for bubble coral fan in builds
Bubble coral fan is a finishing block more than a structural one. The most common use is in aquariums. Drop a few in a glass-walled water tank for color and pair them with sea pickles for lighting. They also work well for underwater bases, where the purple breaks up the gray of prismarine if you’ve converted an ocean monument or built a conduit room.
For stylized reef builds on land, mix bubble coral fans with the other four colors. Build a sand mound, drop a few coral blocks on top, then plant fans around the edges. And for garden detail, you can waterlog a fan inside a flower pot or place one on top of a small pond for a koi-pond look.
It pairs well with sea pickles, kelp, sea grass, and dripleaves for a fully alive underwater scene. If you want a colder color story, swap bubble coral (purple) for tube (blue), or balance the warm tones with brain (pink) and fire (red).
Java vs. Bedrock differences
Bubble coral fan behaves the same way on both Java and Bedrock for the most part. The water requirement and the silk touch rule are identical. Two small differences worth noting:
- On Bedrock, coral occasionally generates in slightly different reef patterns due to differences in world generation. Reefs themselves are still warm-ocean-only on both editions.
- On Java, the death animation when coral dries out is sometimes more immediate; on Bedrock there’s a brief moment before the visual update fires.
Neither difference affects gameplay or the way you’d use the block in a build.
Frequently asked questions
Can you grow bubble coral fan from a sapling?
No. Coral does not have saplings or any natural propagation method in vanilla Minecraft. You can only obtain bubble coral fan by mining one with silk touch in a warm ocean.
Does bubble coral fan emit light?
No, bubble coral fan emits no light at all. If you want light underwater near coral, use sea pickles or place glowstone behind glass.
Can bubble coral fan be bone-mealed?
No. Bone meal does not affect coral or coral fans. They cannot be grown or spread artificially.
What’s the difference between bubble coral and bubble coral fan?
Bubble coral is the small upright plant; bubble coral fan is the flat, leafy version that mounts to walls or floors. They drop from the same coral structures and look similar in color but differ in shape and placement.
Will bubble coral fan survive in a frozen ocean or lukewarm ocean?
It will survive if it’s already in water, but it does not generate naturally outside warm oceans. The biome temperature affects spawning, not the block’s lifespan once placed.
Can I push bubble coral fan with a piston?
No. Pistons cannot push or pull coral or coral fans. The block breaks when the piston tries to move it. Plan around this when designing redstone-adjacent decoration.
Why did my bubble coral fan turn gray?
It died. Coral fans need water contact at all times. The gray version is dead bubble coral fan. It’ll keep that color permanently and cannot be revived. Replace it and waterlog the new one to prevent another loss.
Bubble coral fan is a small block with a big visual payoff if you treat it right. Bring silk touch, place it in or against water, and waterlog it the moment it goes down. Skip either step and you’ll wish you hadn’t.
