Info
An undersea home has certain pros and cons that set it apart from any other bases or homes. Firstly, an underwater home is immune to any explosions A TNT explosion. An explosion is a physical event, generally destructive, that can be caused by several different circumstances. It can destroy nearby blocks, propel and damage nearby players, entities, and their armor, and cause 
, is difficult to access by Mobs "Monster" redirects here. For the mob called "monster" in the code, see Human. Mobs are living, moving game entities. The term "mob" is short for "mobile". 1] Contents 1 Spawning 2 Behavior 3 List of 
, and can provide excellent visual range and protection. Be that as it may, an undersea fort can be somewhat time-consuming to build, enter, and exit. Follow these directions and you will have an excellent undersea fortress. As a general rule, building underwater is greatly enhanced with a helmet enchanted with respiration and/or aqua affinity or using a Potion of Water Breathing Potion Type Potions Durability N/A Renewable Yes Stackable No First appearances See History Data values See Data values Name See Data values See the drinkable potions. For the throwable potions, see Splash 
.
A detailed video guide about underwater bases can be found here.
Techniques
There are several basic techniques that are used and combined for underwater work. The most immediate issue is not drowning while you work, followed by clearing the water out of your new base. If your base is deep, getting there and back may also require special measures.
Videos
Breathing underwater
Armor with the Respiration enchantment can extend your breathing time underwater, but even so, for extended work, you will need to create an air bubble to which you can retreat to refill your breath meter. An alternative is to build your home in creative mode in which you cannot drown, and enter it using a tunnel that starts on dry land, stretches under the sand, and enters your underwater home. This option is great for beginners who want to build an underwater home but cannot make advanced potions or easily obtain the helmet.
There are many partial blocks which don`t occupy all (or very much) of their space, but which can force water out of their entire block cell. Fences are probably the cheapest of the lot; if you stack two fences on the sea/lake bottom, you can stand next to them to breathe freely. (You need two so one will be at head height, but if you like, you can then mine the bottom one.) Cobblestone walls Cobblestone Wall Transparency Yes Luminance No Blast resistance 30 Tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 139 hex: 8B bin: 10001011 Name cobblestone_wall Cobblestone walls are decorative blocks. There are 2 types: 
work exactly the same way, while glass panes Glass Pane Transparency Yes Luminance No Blast resistance 1.5 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops None Data values Glass Pane dec: 102 hex: 66 bin: 1100110 Stained Glass Pane dec: 160 hex: A0 bin: 10100000 Name 
and iron bars Iron bar may refer to: Iron Bars Iron Ingot This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point occupy a bit more of their bubble.
Several other blocks can also be used, but unlike fence-type blocks, these will break and drop if the block they were attached to goes away. A door Door Transparency Yes Luminance No Blast resistance 15 (Wood) 25 (Iron) Tools Renewable Yes Stackable Yes (64) Flammable Iron: No Wooden: No, but catches fire from lava Drops Itself Data values See Data values Name 
is slightly awkward but you only have to place one thing to get your bubble. Be that as it may, if you have a vertical surface or block available, you can easily put a sign, ladder, trapdoor, or any of the above blocks against it at head height. You could stack two signs Sign Type Non-Solid Block Physics No Transparency Yes Luminance No Blast resistance 5 Hardness 1 Tool Renewable Yes Stackable Yes (16) Flammable No, but catches fire from lava (Yes in Pocket Edition) First appearances See 
on the floor like the fences, but stacking signs is a bit specific, which is the last thing you want when your air is running out. Be that as it may, you can also stick two signs on top of each other for a full block of air.
All of the above can also be used to block water out of entrances/exits which are generally a good place to start building. To make an air/water doorway from fences, glass panes, or iron bars, pick a corner of your underwater home, and place the fences or panes as though you were making a 2-block high corner window, but skip the actual corner. The two diagonal blocks will keep the water out, but you can easily walk between them.
As of version 1.7, advanced players may have access to Potions of Water Breathing, which will allow them to stay underwater for long times. Be that as it may, it`s still wise to have some bubbles handy just in case you run over time, and/or run out of potions.
Getting to the sea-bottom
In relatively shallow waters, you may be able to just swim down and place a "bubble block" as above. If your target spot is deep enough that getting there is risky, you can make a pillar of fences, glass, etc. from the bottom to shorten the trip. (In SMP, you may need to have your pillar stop well short of the surface, for concealment. If this is not an issue, the pillar can go all the way to the surface.) If you want to go deep enough that you just can`t swim down there, your best bet is probably to drop gravel or sand to make a starter pillar. Then you can run ladders down it from the surface, for initial access. Be that as it may, you don`t want to depend on this setup for long, because if any of the blocks are mined or even blasted, all the ladders above the break will drop. To make the pillar permanent, dig down, replacing the sand/gravel with bubble blocks as you go. You can even replace it with cobblestone, dirt, or, whatever and then stick ladders on that. Alternatively, you can go down to the bottom, and make a new pillar somewhere else, or arrange for other means of access. Lily pads can help with placing the gravel, or let you run a fence or glass pillar from the surface downward. (Put one block on the pad, then use the side of that to place other blocks.) Alternatively, an empty bucket can be used to create a short lived air pocket, refilling your breath meter. This can be enough to get you to the bottom of the ocean, without leaving any evidence you`ve been there. It is safer to have at least two buckets if you intend to do this.
Underwater Access
The simplest sort of underwater base is made by simply placing a door against an underwater mound (you need at least a 3ℂₗ3 space of dirt or stone to start with, and a floor block to put the door on). Once you open the door and step into it, you can simply continue to dig out a lair, more-or-less, as if you were above ground. Once you have an entrance passage, you can place ladders or signs (or another door) inside the original door for a flush entrance, and remove the starter door. If you like, you can then turn around and clear out some of the water to continue your base outward.
For an even more inconspicuous entrance, you can start digging a 1ℂₗ1 shaft down until you hit stone, or a little more, placing ladders every other space as you go. Watch out for caves⃢₀ₔif you break into one, you can either switch to securing the cave and use that for your base, or go back up, seal the hole, and dig somewhere else. Once you hit stone Stone Transparency No Luminance No Blast resistance 30 Tool Renewable Yes Stackable Yes (64) Flammable No Drops Cobblestone (1) Data value dec: 01 hex: 1 bin: 1 Name stone See the block called stone. For 
, mine the first two blocks down, then come back up and start digging horizontally. (This will divert water coming down the hole away from your horizontal passage.) Continue to hollow out your base until you`re content.
Clearing Out Water
If you instead want your base to be truly "underwater", you will need to clear water Water Transparency Partial (-2 to light) Luminance No Blast resistance 500 (Flowing) 500 (Still) Tool Renewable Yes Stackable N/A Flammable No Drops None Data values Flowing Water dec: 08 hex: 8 bin: 1000 Still Water dec: 09 hex: 9 bin: 1001 
out of a fairly large volume. One way to do this is to fill the space with blocks Blocks may refer to: Block - cubes that make up the Minecraft world as a whole. Blocks music disc This disambiguation page lists articles associated with the same title. If an internal link led you , and then remove most of them. So, construct rooms with walls and ceiling, but fill the inside with your chosen filler block. You can use an easy-to-break block such as dirt Dirt Transparency No Luminance No Blast resistance 2.5 Tool Renewable No Stackable Yes (64) Flammable No Drops Itself Data value dec: 03 hex: 3 bin: 11 Name dirt See Dirt. For the similar block, see 
, wool Wool Transparency No Luminance No Blast resistance 4 Tool Renewable Yes Stackable Yes (64), same color only Flammable Yes Drops Itself Data value dec: 35 hex: 23 bin: 100011 Name wool Wool is a block derived from sheep 
, or even (if you already have a floor) sand or gravel Gravel Transparency No Luminance No Blast resistance 3 Tool Renewable No Stackable Yes (64) Flammable No Drops Gravel (90%) Flint (10%) Data value dec: 13 hex: D bin: 1101 Name gravel Gravel is a block that is affected 
. One of the best blocks is slime blocks or TNT as they insta-mine using just a fist, and can be broken even when you are fatigued by a Elder Guardian. Alternatively, you can use a flammable Fire Transparency Yes Luminance Yes, 15 Blast resistance 0 Tool Any tool Renewable No Stackable N/A Flammable No Drops None Data value dec: 51 hex: 33 bin: 110011 Name fire Fire is a harmful non-solid block. Contents 1 
block as filler - wood planks Wood Planks Transparency No Luminance No Blast resistance 15 Tool Renewable Yes Stackable Yes (64) Flammable Yes Drops Itself Data value dec: 05 hex: 5 bin: 101 Name planks Wood planks are common blocks used in many crafting 
or wool Wool Transparency No Luminance No Blast resistance 4 Tool Renewable Yes Stackable Yes (64), same color only Flammable Yes Drops Itself Data value dec: 35 hex: 23 bin: 100011 Name wool Wool is a block derived from sheep will work, but leaf Leaves Transparency Partial (diffuses sky light) Luminance No Blast resistance 1 Tool Renewable Yes Stackable Yes (64) Flammable Yes Drops Sapling (0–1) @@@#@@@Apple(apple.com)###@### (0–1) (from oak and dark oak leaves) Data values Oak/Spruce/Birch/Jungle dec: 18 hex: 12 
blocks burn fastest. When you`ve got your space filled, mine out one of the blocks and use a flint and steel Flint and Steel Type Tools Durability 65 Renewable No Stackable No Data value dec: 259 hex: 103 bin: 100000011 Name flint_and_steel The flint and steel is a tool used to light fires. Contents 1 Obtaining 1.1 Crafting 1.2 
to set a fire in the space, wait for that to burn out, then repeat as needed for any unburned sections. Place Jack o`Lanterns Jack o Lantern Transparency Partial (blocks light) Luminance Yes, 15 Blast resistance 5 Tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 91 hex: 5B bin: 1011011 Name lit_pumpkin “ Jack-o -lanterns: great looks, super powers. 
, Glowstone Glowstone Transparency Yes Luminance 15 Blast resistance 1.5 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Glowstone Dust (2–4) Data value dec: 89 hex: 59 bin: 1011001 Name glowstone See the block. 
, or Sea Lanterns Sea Lantern Transparency Yes Luminance 15 Blast resistance 1.5 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Prismarine Crystals (2–3) Data value dec: 169 hex: A9 bin: 10101001 Name PC: sea_lantern PE: sealantern Sea lanterns 
to light the new space, to prevent spawning ( Torches Torch Transparency Yes Luminance 14 Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 50 hex: 32 bin: 110010 Name torch See the common light-emitting torch. 
would be washed away if water does ever come in, say while you`re remodeling).
Alternatively, you can choose to use sponge Sponge Transparency No Luminance No Blast resistance 3 Tool Any tool Renewable No Stackable Yes (64) Flammable No Drops Itself Data value dec: 19 hex: 13 bin: 10011 Name sponge “ Just like in real life, sponges in 
. This is the fastest way in creative mode. In survival, be that as it may, it may be more time/resource efficient to use the previously mentioned methods. For larger spaces you may need to partition the space into smaller areas, using walls or pillars of some other block to prevent the water from re-creating source water blocks. Sand Sand Transparency No Luminance No Blast resistance 2.5 Tool Renewable No Stackable Yes (64) Flammable No Experience Smelted: 0.1 Drops Itself Data values Sand dec: 120 hex: C0 bin: 11000 Red Sand dec: 121 hex: C1 bin: 11001 Name sand This 
or gravel Gravel Transparency No Luminance No Blast resistance 3 Tool Renewable No Stackable Yes (64) Flammable No Drops Gravel (90%) Flint (10%) Data value dec: 13 hex: D bin: 1101 Name gravel Gravel is a block that is affected can be dropped from construction platforms above, or you can use slime blocks as you can quickly punch the block with your fist, letting you make new pillars further into the large space, clearing out the water as you go.
For walls and ceiling, almost anything will do, but glass Glass Transparency Yes Luminance No Blast resistance 1.5 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops None Data values Glass: dec: 20 hex: 14 bin: 10100 Stained Glass: PC: dec: 95 hex: 5F bin: 1011111 PE: dec: 241 hex: F1 
, fences Fence Transparency Yes Luminance No Blast resistance 15 (Wood) 30 (Nether Brick) Tools Renewable Wood: Yes Nether Brick: No Stackable Yes (64) Flammable Wood: Yes Nether Brick: No Drops Itself Data values See Data values 
, or iron bars Iron bar may refer to: Iron Bars Iron Ingot This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point give a nice view, and add options for entrances from the water (see below).
Drop-in construction
This method is particularly good for building in very deep areas of water as it requires less time spent underwater.
Find a fairly deep patch (depending on how big you want your home to be) of water with a relatively flat floor. Then, on or above the water surface, build a platform out of any non-gravity block (it`s best to use blocks you can remove easily⃢₀ₔdirt, wool, leaves, etc.). Build the shape of your desired building on the platform out of gravel or sand, as a solid block or "sand castle", but without the exterior walls. When you are happy with your work, dig or burn out the platform underneath (beware of falling sand!). Then all you have to do underwater is cover the fallen mold with walls and ceiling, and hollow it out. A tip for hollowing: Bring down a slab or stair of any kind. Use it to dig out the bottom block of sand and immediately place it on the bottom of the space beneath. This may take a couple of tries, but when you get it in, the rest of the sand will fall on it and break.
SMP Hiding your Base
In Faction bases do not claim land as anyone going over by boat or under by pick will notice the change from wild area to faction area. Make it as deep as possible if possible on the bottom of a deep ocean with a central hub (where F-Home is set) made of blue glass, or a gravel "hill" with a blue glass tower. Make sure half slabs are used over any kind of light near windows or exits. Only where faction members need it badly. Farms should of course be lit, but make sure there is no hint of light coming out anywhere. Keep buildings separate, small, and blending in irregular shapes. Blue glass is the only glass that should be used as it blends in the best with water. The best thing about bases underwater is you can, if carefully planned, mold entire buildings. Also, keep player detection systems stationed in a ring around 40 blocks away from where members should be, and buy cow spawn eggs from server shops to supply the cow-based player detector. But the best test is going up to the surface and drinking a night vision potion after looking at where your base is located to look for any obvious signs of a base. Then, do it under the effects of the potion. If you do see those signs, go back down and troubleshoot (just be aware of the X, Y, and Z coordinates, as the author of this paragraph is still trying to re-find his underwater base with his coordinates).
Videos
Tips
- Sugar cane Sugar Canes Transparency Yes Luminance No Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data values See Data values Name reeds Sugar canes are an item and an
blocks water, but not movement. You can use them as air-to-water doors. Be that as it may, placement is restricted: Just like on dry land, the bottom block must be placed on sand or dirt, with a water block next to, and one level below, the placed cane (in version 1.7, underwater gravel becomes common, and sugar cane can`t be placed on gravel). Also, sugar cane is fragile, and if any cane is broken, all the canes above it will break too. - Ice Ice Transparency PC: Partial (-2 to light) PE: No Luminance No Blast resistance 2.5 Tool Renewable Yes Stackable Yes (64) Flammable No Drops None Data value dec: 79 hex: 4F bin: 1001111 Name ice See may form over the surface of your chosen water, generally in colder biomes. Make sure to arrange a way to get past it safely.
- Buckets Bucket Type Tools Durability N/A Renewable Yes Stackable Yes (16) First appearances See History Data values PC: dec: 325 hex: 145 bin: 101000101 PE: dec: 3250 hex: 1450 bin: 1010001010 Name bucket See the item. For the server can be used to regain your breath. If you need air, you can click an empty bucket anywhere (no target needed) to refill your air meter. Be that as it may, that will fill the bucket. To empty the bucket so you can do that again, you need to click it on a block. (Note: When using the empty bucket, make sure your head is in a water source block. In an ocean or in a river, be that as it may, all water blocks are source blocks, so this usually won`t be important.)
- Torches Torch Transparency Yes Luminance 14 Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 50 hex: 32 bin: 110010 Name torch See the common light-emitting torch. can be used almost like signs and such for temporary air pockets⃢₀ₔthey will drop almost immediately, but if you`re in their space, they will replenish your air meter.
- If building an underwater tunnel to access your base, remember that still water will allow you to pass in both directions at the same rate, but flowing water works better for one-way paths.
- You should always make a second door along with a chamber just in case one door breaks and your house is flooded.
