Build an Automatic Coral Farm: Minecraft Underwater World in Full Color

Minecraft’s underwater world has been glowing with colorful diversity since the “Aquatic Update.” The vibrant coral blocks offer countless creative possibilities—from construction projects to decorating your underwater bases. However, maintaining and harvesting these blocks can be challenging. In this article, you’ll learn everything you need to know about corals in Minecraft and receive a step-by-step guide to building an automatic coral farm.

Discover the Colors and Variety of Corals in Minecraft

Where to Find Corals in Minecraft: The Best Biomes and Tips

Just like in our real world, corals can be found in coral reefs. One of the most famous of these reefs can be found in Australia. In Minecraft, these clusters of corals are hard to miss because their bright colors can be seen through the seawater.

Coral reefs only exist in warm oceans, and not everywhere in them. So, you first need to find one of these warm areas and then specifically look for a coral reef. Their formations underwater are very beautiful and should not be overlooked during your exploration of the ocean.

How to Use Corals Creatively in Minecraft

First, let’s take a closer look at the three different variants of corals. It is important to know that you need a tool with “Silk Touch” to harvest them; otherwise, the fragile coral will break in your hand.

• Coral Block: A complete block, with a specific pattern.
• Coral: A type of small bush that grows underwater.
• Coral Fan: A flat variation of a normal coral that can also be attached to walls.

Additionally, the three coral variants come in five different colors:

• Tube (blue)
• Brain (pink)
• Bubble (purple)
• Fire (red)
• Horn (yellow)

Unfortunately, corals need water to survive. Either the coral itself must be in water, or at least the block next to it must be completely or partially filled with water. A drawback of corals that you harvest without Silk Touch or want to plant without water is that they turn gray and die. Even this variation can be a good building block, but they are not as versatile as the colorful blocks. This limits the use of corals, but it doesn’t mean you can’t be creative!

Moreover, all three variants are exclusive, so you cannot craft coral blocks from normal corals or coral fans. Blocks cannot be automatically generated, so you must harvest them yourself in the warm ocean. The best tools for this are a helmet with the enchantments “Respiration” and “Aqua Affinity,” as well as boots with “Depth Strider,” to make it significantly easier. We also have the appropriate article for this (Minecraft Enchantments – Your Ultimate Guide) .

Building an Automatic Coral Farm: Easy Step-by-Step Guide

For the automatic coral farm, we take advantage of the fact that soil in a coral reef dusted with bone meal grows corals alongside normal sea grass. From this, you can easily build a machine that continuously generates new corals for you. You just need to make sure to build the farm in a warm ocean biome, but there’s nothing else you need to know.

Building Materials

• Building blocks
• Glass
• Dirt
• 2 Dispensers + several stacks of bone meal
• 6 Redstone
• 2 Rails + 2 Powered Rails + 2 Detector Rails
• 9 Walls
• 3 Hoppers + Chest
• 6 Pressure Plates
• 2 Water Buckets
• Minecart
• Shovel with Silk Touch (In Bedrock, you can also enchant shears with Silk Touch, but not in Java. Therefore, a shovel is your best option.)

Step-by-Step: How to Build an Automatic Coral Farm in Minecraft

Start the farm with a 6x2 block platform over the warm ocean, where corals can grow. Along one row, place a powered rail at each end, then a detector rail, and two normal rails in between. At each end, place a block as a stopper.

Next, build two L-shapes one block behind and below the rails, which will activate them. Here, you will need 3 Redstone dust each, build a building block at the end, and place a dispenser on top, facing upwards. When we later ride with the minecart over the rails, the dispensers will be activated. Fill the dispensers with bone meal.

Surround the dispensers with a layer of dirt and then with a ring of building blocks. One side should remain open. That’s where we build our collection mechanism. This arrangement is sufficient because corals only grow in a 3x3 field around bone meal.

Place the double chest on the open side and the three hoppers that will direct the corals into the chest. Above, build a 3x3 high wall. These should not be full blocks but must consist of Minecraft walls.

Next, encircle the entire farm with a 3-block high wall—this time made of full blocks. On the front side with the rails, use pressure plates on the bottom row and a building block of your choice above. We chose glass.

Finally, you need to fill the farm with water. The first level must be completely full, so place water buckets along two sides to create full water blocks. Fill the second level with temporary blocks. On the top level, you only need to place 2 water buckets on the opposite side of the walls. This stream will ensure that the harvested corals float up and then enter the hoppers. Remove the middle level of temporary blocks.

Your automatic coral farm is now complete! To use it, you need a tool with Silk Touch and a minecart. Place the minecart on the rails, get in, and press right or left. This will automatically drive you back and forth—simultaneously activating the dispensers and generating corals. Hold down the right mouse button and aim at the rows in front of you. Within just a few minutes, you’ll have several stacks of corals!

Conclusion: Colorful Coral Farm for Your Underwater Worlds

Corals are beautiful and colorful! You can use them especially well for construction projects in combination with water, but even dead corals can be nicely complemented with stone blocks and stand out due to their unique patterns. With the automatic farm, you can collect normal corals and coral fans in all five variations. Bring color to your underwater worlds on your own server. Rent your Minecraft server and create vibrant oases!