Everything You Need to Know About the Heart of the Sea in Minecraft in 2026

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Tired of suffocating under the ocean? The heart of the sea is the key ingredient for making a leads, the block that gives you endless breath, night vision and rapid blasting underwater. It's a rare item, available at Java as on Bedrock, and here's how to find and use it.

What is the heart of the sea?

Heart of the Sea, a rare blue Minecraft item used to craft a conduit

the heart of the sea, Where heart of the sea in English, is a rare item of Minecraft round in shape and blue in color. Its internal ID is heart_of_the_sea.

It was introduced with the Version 1.13, the famous aquatic update. Since that update, the heart of the sea is generated in the buried treasure chests, in both versions of the game.

Its role is simple but valuable: it is the key ingredient for Make a Duct. In fact, that’s the the only recipe who uses this rare item, available in the following editions Java and Bedrock.

How to find the heart of the sea in Minecraft?

the heart of the sea cannot be achieved by exchange nor by craft. In survival mode, the buried treasure chest is the only way to get your hands on it. Here's how to do it:

  1. First, approach a ocean.
  2. Underwater, look for a sunken wreck or ruins that might contain a chest. Keep an eye on your air gauge so you don't drown.

Find a wreck that can hold a trunk in Minecraft
Find a wreck that can hold a trunk in Minecraft. Antonin for Alucare.fr
  1. Inside the trunk, you'll often find a treasure map.
  2. With the map in hand, get out of the water and locate the’location of buried treasure thanks to his instructions.

Location of a buried treasure indicated on the treasure map in Minecraft
Treasure location indicated on map. Antonin for Alucare.fr
  1. Follow the marked trail to the cross, then burrows under the sand.
  2. Take your time until you come across the buried chest.

A buried treasure chest found under the sand in Minecraft
A chest found under the sand. Antonin for Alucare.fr
  1. Open it and get the famous heart of the sea, as well as other items.

A buried treasure chest containing the heart of the sea in Minecraft
A chest containing the heart of the ocean Minecraft. Antonin for Alucare.fr

Here's a quick tip to speed things up: feed a dolphin some raw fish, it will lead you straight to the nearest treasure.

What to do when you find the heart of the sea in Minecraft?

the heart of the sea has only one use in the game: to craft a leads, by combining it with 8 nautilus shells on a crafting table. Before you start crafting, you'll need to collect these shells.

Here is a nautilus shell :

Nautilus shell in Minecraft, an ingredient in the conduit

1. Find 8 nautilus shells

It exists three ways to obtain nautilus shells:

  • The sin, which can turn a pebble into a treasure,
  • L'exchange with a village fisherman,
  • Killing Noyés : These aquatic zombies sometimes hold a shell in their hand and drop it when they die.

A Drowned Man Holding a Nautilus Shell in Minecraft
A drowning man with a nautilus shell. Antonin for Alucare.fr

2. Making the Conduit

Once you've 8 shells put together, open your craft table and places the heart of the sea at the center. Then place the 8 nautilus shells in all the remaining squares, as shown in the image below.

Crafting recipe for the Conduit using the Heart of the Sea and 8 nautilus shells
Illustration of a Conduit craft. Antonin for Alucare.fr

How do I activate the conduit in Minecraft?

Place the leads Just putting it at the bottom of the water isn't enough. You have to build a frame for it out of prismarine blocks. You can use any of the following materials:

  • The prismarine,
  • The prismarine bricks,
  • The dark prismarine,
  • The marine lantern.

Here's how to enable the pipeline step by step:

  1. Build a frame around the duct opening. The first ring requires at least 16 blocks for basic activation.

Prismarine and Dark Prismarine Structure to Activate a Conduit in Minecraft
Prismarine and Dark Prismarine Structure. ©Antonin for Alucare.fr
  1. Place the heart of the sea (through the pipe) exactly in the center, with a space of’an empty block between him and the frame. The whole forms a volume of 5×5 blocks around the duct.

Pipe placed on a solid block of dark prismarine in Minecraft
Conduit placed on a solid block of dark prismarine. Antonin for Alucare.fr
  1. Delete the temporary block under the pipe so that it floats freely in the center of the water.
  2. The structure is correct when the pipe opens and a pearl (the eye) appears in its center.

To maximize the reach, complete the structure with a frame made of three interlocking rings (one horizontal and two vertical) made of prismarine blocks. This significantly extends the conduit's radius of effect.

Conduit activated at the center of its prismarine structure in Minecraft
The Conduit is activated. Antonin for Alucare.fr

What are the uses of Conduits in Minecraft?

Once enabled, the leads acts like a real submarine base. It creates the “Conduit force” to all players in the water or out in the rain within its range. Specifically, you’ll enjoy:

  • l'apnea : No more suffocation underwater,
  • there night vision : better visibility in dark areas and at depth,
  • the accelerated mining : You break the blocks much faster underwater.

The Duct also deals damage to nearby hostile creatures, such as the Noyés. The basic range covers 16 blocks with a single ring. With the complete three-ring structure, the range increases significantly, enough to secure an entire underwater construction site.

the heart of the sea remains a A rare item that can only be found in buried treasures, available in the following editions Java and Bedrock.

A question about the conduit, the craft, or the nautilus shells ? Post it in the comments.

To learn more, check out all our guides on Wiki Minecraft on Alucare.fr.

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Minecraft

Released on : November 18, 2011

Developed by : Markus Persson, Mojang Studios

Edited by : Mojang Studios, Sony Interactive Entertainment, Xbox Game Studios

Available on : PC, Mac, Linux, PlayStation, Xbox

Genres : Multiplayer