Whenever a coral block or plant is placed anywhere but water it remains alive for a few seconds before dying as usual although Coral fans die immediately upon being placed above water. It can trade, making natural items more available, less dangerous to obtain, and in some cases, renewable. If you wait too long, the bubble coral will float to the top. Yes. After this place them in a rectangular shape on a table or the floor of your house. It has to be broken with a tool enchanted with Silk Touch, otherwise it will drop nothing. Nintendo Switch version, press the ZR button and hold it down on the tube coral block. Hold a Pickaxe with Silk Touch. 20 Ocean Guide | Coral, Icebergs, Water Caves🔵Discord:. How to craft Coral blocks in Minecraft: crafting recipes, resources, photos, tricks and tips. Hold a Pickaxe. Fire Coral Block - Red Coral Horn Coral Block - Yellow Coral Infested Chiseled Stone Bricks - Chiseled Stone Brick Monster Egg. 5 yr. First, the player must plant a sea pickle underwater on top of a coral block. Smooth Stone was added in Minecraft Beta 1. The Minecraft Ocean biome is one of the most dominating biomes in the Overworld, taking up huge amounts of the landscape wherever they appear. Coral comes in many different colors and shapes, similar to how there are many varieties of coral on. minecraft:coral_block Coral Block; minecraft:bamboo_stairs; minecraft:stone_block_slab Stone Block Slab; minecraft:leaves Leaves; minecraft:glowingobsidian Glowing Obsidian; minecraft:stone_block_slab2 Stone Block Slab 2; minecraft:leaves2 Leaves 2; minecraft:birch_standing_sign Birch Standing. These blocks are always grey. Blocks Sculk, a block found abundantly in the deep dark. 1 ID 4. SUBSCRI. Contents 1 Obtaining 1. Nothing Yes Decorated Pot: 4 pottery sherd (s)/ brick (s) when broken with a tool on main hand, else it drops itself. A conduit drops as an item when broken with any tool or by hand, but a pickaxe is the fastest way to break it. ; Data Value (or damage value) identifies the variation of the block if more than one type exists for the Minecraft ID. These bright and colorful blocks form coral reefs that naturally generate in warm oceans. Decorated blocks can be placed like any other block in Minecraft. 1. The update aquatic brought us one of the most colorful blocks in the game, coral! I go through how to get coral, how you can keep it alive, things you can bu. net website will help you easily understand how to make these items in Minecraft. Find a Horn Coral Block. Dead coral blocks Now comes in 5 variants red dead coral, yellow dead coral, blue dead coral, purple dead coral, and pink dead coral Coral will turn into the equivalently-colored dead coral when outside of water; for example, red coral. 58. One of the most fascinating aspects of Minecraft is the use of coral blocks. Most of these items can be acquired normally, but some of them, like the coral blocks or glowstone, can be difficult and even dangerous to find. Best. press "ENTER". Hmm. EDIT: new version Farm everything document: my efficient sea grass farm on twitch stream to. 8. Who knew? Luckily, the magnificent coral block adds a welcome splash of color to even the bleakest body of water. Now we need to put two or more water blocks inside that rectangular box. My idea is pretty simple, to keep coral alive if it is in contact with any prismarine block, including prismarine, prismarine bricks, dark prismarine and sea lanterns. The value of these state(s) are set when the block is placed. This is what a fire coral block looks like: 2. Revive Dead Coral is a Datapack for Minecraft 1. Coral blocks spawn naturally in coral reefs, found covering on the seafloor in warm ocean biomes. They are ideal for decoration and are mainly used for this purpose. This is the case with coral, which isn’t that difficult to gather – as long as you are ready to spend a lot of time underwater. Dried Kelp Block. ago. 5 yr. Though basically all of minecraft is plundering resources from native habitats for our own purposes on a large scale. All coral blocks in snapshot 18w09a (Java Edition) had the same texture but were colored differently. Coral reefs are features that generate in warm ocean biomes. Bubble Coral Block (texture) JE2 BE1. If you can't find what you're looking for on this list there are more values on the Minecraft Gameapedia "Explosion" page below. Hold a Pickaxe with Silk Touch. Potted; Water Spawner; Bedrock Edition only Blue Rose. The brain coral fan is a non-solid block that can be found in warm oceans and it is one of five different coral fan variants. It allows you to revive dead coral, alongside their block and fan variants by using a setup of blocks. Brain coral blocks found in a warm ocean (via. In java edition, one coral block can be bought from wandering traders for 3 emeralds, while in bedrock edition, 3 of the same coral block can be bought for 1 emerald. This is because the Essentials /give command overrides Minecraft's built. To mine a tube coral block, you need to dig up the tube coral block with a pickaxe. In Minecraft, there are coral blocks, coral fans, and coral in the coral reef. I understand you can waterlog stairs of prismarine dark prismarine and prismarine bricks, but that can get. Different colors of coral plants should grow on different colors of coral blocks. If it’s outside water it can’t do this and it dies. This is a variation of the normal ocean, with warmer waters. With the launch of its Update Aquatic in 2018, Minecraft invited gamers to build with coral in-game to help restore and regrow coral in real life. Coral blocks can be obtained only with a pickaxe enchanted with Silk Touch; if mined with a pickaxe not enchanted with Silk Touch, they drop the respective dead coral block. Apparently pouring paint into the oceans to make them more colorful is a bad thing to do. Minecraft Earth blocks (2 categories, 10 pages) N. Coral fans are non-solid blocks that come in 5 variants: tube, brain, bubble, fire, and horn. Breaking coral fans without Silk Touch destroys the coral fan. It comes in many different colors and is mainly decorative. New comments cannot be posted and votes cannot be cast. Not 100% sure thoThis can be used to duplicate any 2 block tall flower and can be considered by some as legitimate duplication, since the bug tracker says it works as intended. 1k 25. A coral block is a solid block that comes in five variants: tube, brain, bubble, fire, and horn. As the name implies, they are Blocks that can be crafted and/or interacted with to perform specific tasks or functions. ; Stack Size is the maximum stack size for this item. Place a dispenser in front of a water source block with a coral block. Here you can find out how to make coral blocks in Minecraft. 335. . Pick up the Dead Bubble Coral Block. These are the pickaxes you can choose from. Hold a Pickaxe with Silk Touch Along with all the blocks and fan variants, coral was added to Minecraft with the 1. Hold a Pickaxe. A larger Coral Reef can be seen in the distance and is only a short boat ride away. Blocks are the basic units of structure in Minecraft that make up the game's world. However, some seeds have the reefs spawned in such a way that they’re really able to showcase their beauty to the block-filled world. 3. Brain Coral Fan in Minecraft. Pottery, hanging signs, and bamboo blocks. This data pack makes it so you can craft coral blocks. Coral fans are non-solid blocks that come in 5 variants: tube, brain, bubble, fire, and horn. Coral uses in Minecraft. This is what a brain coral block looks like: 2. Windows 10 version, click the left mouse button and hold it down on the tube coral block. Command block. You will need to. Normally you have to place them next to water block or waterlogged block. Enchanting tables can be crafted in Minecraft by combining four blocks of obsidian, two diamonds, and one book. A horn coral block is a yellow coral that is usually found growing underwater in a Coral Reef in the Warm Ocean biome. Hold a Pickaxe with Silk Touch. 1 Dead coral 2. This article is about the solid block. 16. A small Coral Reef exists right beneath the taller edge of the island, with a gap at the water's surface revealing a Lush Cave beneath the island. It is a water world with a warm ocean that is filled with schools of tropical fish, pufferfish and squids. press “ENTER”. Real coral use tiny hairs to catch particles floating into past to nourish itself. Resolved. Build With It: Coral! Craft some colorful sea-nery. png 160 × 160; 400 bytes. Here, create a row of blocks on the ground, next to the tunnel. You spawn in a Badlands/Desert biome, and a few dozen blocks away is a multi-layer exposed Lush Cave built into a Badlands Mountain Cliff overlooking a small (but beautiful) Coral Reef lake. Coral is a type of non-solid block that comes in five variants: tube, brain, bubble, fire, and horn. Cutting down massive forests, strip mining, colonial exploits. bubble_coral_block: 火珊瑚方塊: fire_coral_block: block. This is what a brain coral block looks like: 2. Coral is a very valuable building material that grows in warm ocean biomes. They consist of multiple clusters of coral blocks, coral, and coral fans. Dead Bubble Coral Block can be summoned using a command in creative mode. This requires: open chat (press "T") write command /give @p minecraft:bubble_coral_block. ago. . Tube coral block looks like bamboo shoots that grow underwater. Dead coral is the dead variants of coral. The building itself will need to be in a 3x3x3 body of water, so you can build it on the surface if. Iron Blocks that are underwater and powered by Redstone should be able to turn coral and coral fans planted on them into coral blocks over time. So my idea is to add an option to set corals / coral fans / coral blocks so they will never become dead corals, maybe a blockstate like /setblock ~ ~ ~ fire_coral [alive=true], if you have names to replace "alive" write in the comments. Cook_Time: 10 # If you want only certain players to place coral. Minecraft Coral Reef: Where to find coral reefs, what blocks are in a coral reef, and everything else you need to know about coral reefs in minecraft. 1 Upward-facing shulker boxes. : minecraft:block_face : String : down, up, north, south, east, west : Which block face the player placed. Now add the coral blocks in water and put the coral fans on top of the colourful coral blocks. 3, making it among the oldest blocks in the game. It allows you to revive dead coral, alongside their block and fan variants by using a setup of blocks. This is ten times the duration of a single piece of coal and 1 1 ⁄ 9 times as efficient (+11. This is what horn coral looks like: 2. For all the blocks in Minecraft that have no real-world counterpart (hello, prismarine), some of our most inspiring blocks are also precious in the real world. Min / Max State IDs. . False means. While exploring an ocean, players often find coral blocks. This is the case with coral, which isn’t that difficult to gather – as long as you are ready to spend a lot of time underwater. It will not be difficult for you to figure out how to craft them in Minecraft. For Pocket Edition (PE), you tap and hold on the fire coral block. A massive coral reef between a desert and badlands (Image via Minecraft) Coral can be found generating naturally in the warm ocean biome. Do not try to use this block to respawn in the Overworld, it will explode, just like right-clicking on beds in the Nether. The Flying Dutchman isn’t known to pass on treasure and has traveled across coral reefs and far away sand blocks to get his share of the best day ever. Coral blocks come in five color variations, matching the decorative corals, tube, brain,. A tool to convert 3D models into Minecraft formats such as . Mine the Fire Coral Fan. Coral and all its variants . Specifically, they can spread to the original sea pickle's level or. You need to use a Silk Touch pickaxe to harvest it, then the block must be kept adjacent or in water to stay alive. 18w10b is the twenty-fifth snapshot released for Java Edition 1. To mine a tube coral block, you need to dig up the tube coral block with a pickaxe. Are coral fans exclusive to specific Minecraft versions? Coral fans were introduced in Minecraft Java Edition 1. 5 Experimental Texture Pack. One way to obtain coral in Minecraft is by using a silk touch tool. Where Do Coral Reefs Spawn Minecraft. Cold ocean ruins generate in normal, cold, and frozen ocean. A coral block is a solid block that occurs in five variations: tube, brain, bubble, fire, and horn. Coral blocks are currently decorative items that have no specific/other uses. For Pocket Edition (PE), you tap and hold on the fire coral block. A coral block is a solid block that can be found on the sea floor in warm Ocean Biomes. The warm ocean has an aquamarine water tone at the surface and often generates next to deserts and badlands. It looks very similar but the pattern is not the same, it. Types of Coral. While some items in. The Wiki. Mangrove roots can be broken by hand, but using an axe is quickest. This is what a horn coral block looks like: 2. Instead of doing this, we should be able to craft coral blocks from 4 corals of that type, as coral is farmable using bonemeal underwater. ago. /execute if block ~ ~ ~ minecraft:dead_horn_coral run setblock ~ ~ ~ minecraft:horn_coral. This is what a tube coral block looks like: 2. fire_coral_block: 角珊瑚方塊: horn_coral_block: block. Registered User shared this idea. If an oasis biome existed in Minecraft, we believe it would look like this. Hold a Pickaxe with Silk Touch These blocks are made from wood and have the potential to catch on fire and burn down. First, you need to find a horn coral block in your Minecraft world. Survival_Furnace_Recipe: true #The amount of dead coral you want it to give the player. Being next to water isn't enough. This is what a tube coral block looks like: 2. Using you can craft a glowing stick (aka underwater torch) by surrounding a stick with coral essences. . The game control to break the brain coral depends on the version of Minecraft: For Java Edition (PC/Mac), left click and hold on the. For all the blocks in Minecraft that have no real-world counterpart (hello, prismarine), some of our most inspiring blocks are also precious in the real world. Dead coral fans are the dead variants of coral fans. All about coral in Minecraft. Dead coral is the dead variants of coral. press “ENTER”. This is the case even if a file for that structure already exists on disk. This article is about the non-solid block. The brain coral block is bright pink in color and can be spotted easily among the coral structures. Just like its real-world counterparts, the crab is important to the mangrove swamp eco-system, which is why you can find it hiding between the vines of this mud- tastic biome. Coral Blocks: Dead Coral Blocks: Yes (only with pickaxe) Coral. To mine a brain coral block, you need to dig up the brain coral block with a pickaxe. . These clusters come in a wide variety of shapes, sizes, and colors. Kelp are blocks that can be used as another food source in the game. 珊瑚扇（Coral Fans）是一类非固体方块，有管、脑纹、气泡、火、鹿角五个变种。 失活的珊瑚扇（Dead Coral Fans）是珊瑚扇的失活变种。 在Java版中，失活的珊瑚扇不会生成在世界中。 珊瑚扇和失活的珊瑚扇[仅基岩版]会自然生成在珊瑚礁结构中。 在暖水海洋生物群系的水中使用骨粉会有一定概率生成. Budding Amethyst (texture) JE3 BE1. 13 Update Aquatic. Kelp can be mined instantly with any tool or with the player's fist. The next stage is to put glass over the frame, pour water from a bucket, and level it out. Omg, I just tested this. 5 Removed From Java: Infinite Water & Lava Blocks. ago. The reefs are found within the warm water biome, consisting of multiple clusters of coral blocks, coral, and even coral fans. 16. Dead corral have a particular type of block update that causes the dupe. 2 Note Blocks 3 Sounds 3. When a composter is completely filled, a single bone meal. Blue Concrete Powder. In the image above, you can see a. This is what a bubble coral block looks like: 2. Sculk Catalyst, a. Roy 02 Nov 2023. Giving back to the ocean with Coral Crafters. First, you need to find brain coral in your Minecraft world. If placed outside of water, it dies and transforms into its respective dead coral after 3 to 5 seconds. press "ENTER". Thanks, that helps me a lot :) :edit: Oh, I keep thinking of coral as meaning the coral blocks, which can't be farmed at all, just mined. For Pocket Edition (PE), you tap and hold on the fire coral fan. So for coral, use bonemeal on a coral block and the coral will grow? After testing, you can make the coral fans grow with bonemeal, but not the coral blocks. In some cases, the same ID value has been assigned to similar items. It’s a brilliantly colored block that players can easily spot underwater. Minecraft ID List (Xbox One Edition) Each block or item has an ID value assigned to it in Minecraft Xbox One Edition. amiiboh • 4 yr. Coral and coral fans can be obtained by applying bone meal to dirt, coarse dirt, sand, red sand, or gravel underwater in a warm ocean biome. r/Minecraft. This article is about the non-solid block. Coral may refer to: . But with this data pack, you don't need to do that! Instead, you can put a dead coral block and a sea pickle in the crafting grid. Registered User. Hold a Pickaxe with Silk Touch. 1:- Make a 3 blocks bridge above the ground. Behind: a forest of kelp and seagrass. Now listen, you are working on a map, you disable vanilla. A coral block is a. 18w10b: Replaced the single dead coral block with five dead coral blocks (once again, called dead coral at the time). サンゴブロック、サンゴのブロック[Bedrock Edition限定]（英：Coral Block）は、クダ、ノウ、ミズタマ、ミレポラ、シカツノの5種類の亜種がある固体ブロックである。 死んだサンゴブロック、死んだサンゴのブロック[Bedrock Edition限定]（英：Dead Coral Block）は、サンゴブロックが白化したブロック. The distribution of. The conduit will need to be in the center of the building and floating in order to activate it. The game control to break the tube coral depends on the version of Minecraft: For Java Edition (PC/Mac), left click and hold on the coral. Coral blocks and their dead variants can be used for building or as decoration blocks. 18w10a: Changed texture of all coral blocks. brain coral block will be given to the player with the. This very unique Minecraft floor design by u_r_mrGay shows how a coral reef can be a perfect material for floor designs. This requires: open chat (press “T”) write command /give @p minecraft:dead_horn_coral_block. A brain coral block is a pink coral that is usually found growing underwater in a Coral Reef in the Warm Ocean biome. Minecraft coral is a good representation of real coralHorn coral is usually found growing underwater in a Coral Reef in the Warm Ocean biome. Dead coral is the dead variants of coral. This is what a tube coral block looks like: 2. Wolfbear2960 • 2 yr. Coral may refer to: . press "ENTER". Behind: a forest of kelp and seagrass. Both the normal and dead ones look amazing in certain situations but we don't see them used that much because of the renewability issue. First, collect some glass blocks from anywhere you can get. For example dead_fire_coral will get waterlogged, but dead_fire_coral [waterlogged=false] will not. This video will explain the different uses for coral blocks like decoration and growing sea pick. 6 Pistons. You can waterlog sieve to get the larva, which you can grow into the blocks. The water's color is considerably different and gives the area a 'tropical' feel. Blocks are arranged in a 3-dimensional grid of 1-cubic-meter cells, although some blocks appear to occupy a partial cell; these include slabs, snow layers,. x 3. /give MinecraftMax minecraft:bubble_coral_block. How To Get Coral Blocks In Minecraft. Mobs see dead coral fans as a full block, it's just like the button behavior, but it has made it's way to the dead coral fan. And finally, as you pass the reef to your left-hand side, you’ll spot our block of the week – beautiful pink, yellow, red, and blue coral blocks. This is a variation of the normal ocean, with warmer waters. ilmango has an AFK coral farm on his YouTube channel. With the exception of sculk veins all sculk blocks drop only experience when broken with a tool that is not enchanted with Silk Touch. It comes in various shapes and colors, such as red, pink,. The subreddit for all things related to Modded Minecraft for Minecraft Java Edition --- This subreddit was originally created for discussion around the FTB launcher and its modpacks but has since. Coral blocks can be crafted from coral/coral fans. Learn how to mine coral in Minecraft here! This quick tutorial shows you exactly how to collect Corral Blocks, coral plants, sea grass, and sea pickles. Dead coral blocks can be obtained with. In today's Minecraft 1. Block of Lapis Lazuli. Coral blocks are currently decorative items that have no. A brain coral block is a pink coral that is usually found growing underwater in a Coral Reef in the Warm Ocean biome. It's a shame that you can't regrow it since those blocks have a really awesome design. bubble coral block will. A massive coral reef between a desert and badlands (Image via Minecraft) Coral can be found generating naturally in the warm ocean biome. The devs expressed interest in adding it to the game way back in 2009, very early in development. Block of Redstone. In the image above, you can see coral blocks forming shapes that make up the reef. 1 Placement on top of blocks. Coral blocks are currently decorative items that have no specific/other uses. This is what a bubble coral block looks like: 2. The devs expressed interest in adding it to the game way back in 2009, very early in development. However, the coral will bleach and die under certain conditions, much like in the real world. When mangrove propagules grow, they develop. 13 - The Update Aquatic. Head over to or create an enchanting table. The devs expressed interest in adding it to the game way back in 2009, very early in development. PROS: So much color! CONS: Makes the rest of the ocean look drab by comparison. 13 Update Aquatic that came out on July 18, 2018. While some items in Minecraft are stackable up to 64, other items can. Seagrass can be harvested only with shears. To pick up a brain coral block, you will need to use a pickaxe that is enchanted with silk touch. This is the only biome where you can find a coral reef. I selected all the coral reef files and a waterblock file, set the Sparseness; one object per 100 blocks(at 50% intensity, one per 6400 blocks at 1%, one per 28 blocks at 100%) I find with that setting you can paint this layer at 100% intensity to achieve the density I show in the above images. Find a Bubble Coral Block. First, you need to find tube coral in your Minecraft world. They consist of multiple clusters of coral blocks, coral, and coral fans. Dead_Coral_Amount: 1 #How long it takes to cook the coral. To celebrate the Minecraft Update Aquatic (Phase One out now in several editions of the game, and in pre-release on Java), we've been working with several partners to help the real-world oceans, through Coral Crafters – our project to help coral reefs!. Description is what the item is called and (Minecraft ID Name) is the string value that is used in game commands. List of Blocks. For other kinds of coral, see Coral (disambiguation). ; Data Value (or damage value) identifies the variation of the block if more than one type exists for the Minecraft ID. Block of Gold. Waterlog certain blocks, like slabs and stairs that don’t take up the whole block. The game control to break the tube coral depends on the version of Minecraft: For Java Edition (PC/Mac), left click and hold on the coral. Block of Diamond. Coral is a type of non-solid block that comes in five variants: tube, brain, bubble, fire, and horn. When this happens, the DataValue identifies the variation of the block (DataValue is sometimes referred to as damage value or data value in commands). When harvested with shears, regular seagrass drops itself as an item, and. 241. Makes it easier than creating an individually unique texture for every block in the game. This is what a bubble coral block looks like: 2. Dead Coral Fans [ BE only] Granite [ BE only] Diorite [ BE only] Andesite [ BE only] Sand [ BE only] Coral reefs are features that generate in warm ocean biomes. To mine a tube coral block, you need to dig up the tube coral block with a pickaxe. Horn coral block. Yes Deepslate: Cobbled Deepslate: Yes (only with pickaxe) Can also be smelted from cobbled deepslate. A coral block is a solid block that can be found on the sea floor in warm Ocean Biomes. Dangerdude40 • 6 mo. Adds the "minecraft:block_face" and/or "minecraft:vertical_half" BlockStates. Tropical fish can be found in warm ocean variants or lush caves, appearing in schools of 8. . 13, it cannot be crafted. When you place a coral under a note block, the note block can even prodice a drum sound. Whereas Warped and Crimson Fungus are relatively new blocks, Smooth Stone Slabs have been in Minecraft since very early in the development of the game. Drops 1 experience. . • 3 yr. To locate one, you’ll have to go far into the water. This is the case with coral, which isn’t that difficult to gather – as long as you are ready to spend a lot of time underwater. schematic, . Glass Blocks. Candles can be mined using. Dead Tube Coral Block . The game control to break the tube coral depends on the version of Minecraft: For Java Edition (PC/Mac), left click and hold on the coral plant. press “ENTER”. And finally, as you pass the reef to your left-hand. They generate in large quantities, as part of coral reefs. Try and place a sea plant in the bottom block of the tank. Blue Carpet. A life on the ocean wave is an intriguing survival experience. The coral reef structure is made from coral blocks. But it took until the Update Aquatic, released in July 2018, before coral finally. You probably mean the coral items that can be farmed with. 3:- Spawn a zombie in the left or right & spawn a villager in right. The values of these states are set when the block is placed. 13 Update Aquatic that came out on July 18, 2018. Idk its also possible to find dead coral already in the reefs in minecraft. Command block. On the bottom of the underwater ravines there should spawn a new coral block, the glowing coral. While coral is valuable as a decoration block, it can be hard to obtain in survival mode, since the Silk Touch enchantment is needed to collect coral blocks without killing them and to collect all non-block forms of coral. Down where it’s wetter. Light levels – 3 (1 glowstone block), 7 (two glowstone blocks), 11 (three glowstone blocks), 15 (four glowstone) Preferred tool – diamond or netherite pickaxe. Minecraft Wiki is a FANDOM Games Community. While running completely out of resources is unlikely to be a factor in normal worlds due to the massive size of a Minecraft map, only some resources can be. Coral dies even when the game rule randomTickSpeed is set to 0. Commands for dead coral blocks? I’m trying to make a command to clear dead coral blocks (replace them with air) but I can’t find their ID This is pocket edition, the only coral IDs I’m finding are coral, coral_block, and a bunch of coral_fan stuff, none of which works on dead coral blocksCoral fans are non-solid blocks that come in 5 variants: tube, brain, bubble, fire, and horn. Coral also requires a light source to survive, so make sure they are exposed to sunlight or placed near a light source such as a glowstone block or a sea lantern. 2 Dead 4 Data values 4. In Minecraft, coral poses some challenges as a building material. Issues with waterlogged coral fan wall. 4. 8,648 download s. There are many types of coral like fire, brain, horn, tube, and. This duplication has many designs, but Minecraft players have settled into a primarily. ; Minecraft ID is the Internal number for the item. • 22 days ago. Place your Lever next to your Piston to be ready to turn it on. A bubble coral block is a purple coral that is usually found growing underwater in a Coral Reef in the Warm Ocean biome. In Minecraft, coral poses some challenges as a building material.