Heart of the Sea

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Heart of the Sea
Heart of the Sea.png

Raw materials




Yes (64)



A heart of the sea is a rare item that can be crafted into a conduit.


Natural generation[edit]

Heart of the sea can be found in all buried treasure chests in stacks of 1.


Crafting ingredient[edit]

Name Ingredients Crafting recipe Description
Conduit Nautilus Shell +
Heart of the Sea

[Java and Bedrock editions only]

Education Edition hasn’t received all of the Update Aquatic features yet, and one of them is the conduit, so hearts of the sea cannot be used to craft conduits in Education Edition.

(Update) The Heart of the sea give a status effect of “Conduit Power” which gives the player effects in water or rain such as, faster mining in water, water breathing, and night vision. Once out of range of the conduit, the effects wear off after 10-13 seconds. Adding more blocks around the conduit will increase range and start to damage any hostile mobs nearby. Completely seal the conduit in a closed box of prismarine blocks, and the eye will open.


Java Edition
1.13 18w15a Added heart of the sea.
18w19a Heart of the sea will now generate in all buried treasure chests in a stack of 1.
Bedrock Edition
1.4 beta An entry in the buried treasure loot table was added named nautilus_core, is unobtainable though since the nautilus_core had not been added into the game yet.
beta Added heart of the sea as an item obtainable in buried treasure chests. It cannot be used to craft conduits yet.
beta Updated textures.
1.5 beta Heart of the sea can now be used to craft conduits.
Legacy Console Edition
TU691.76Patch 38 Added heart of the sea.
Education Edition
1.4.0 Added heart of the sea, which at this time has no use yet. It generates in all buried treasure chests in a stack of 1.


Issues relating to "Heart of the Sea" are maintained on the bug tracker. Report issues there.


  • Before the release of the heart of the sea there was an entry found in the buried treasure chest loot table named nautilus_core which was later revealed to be the heart of the sea. Despite the name change the heart of the sea continues to be referred to as the nautilus_core in most game files.‌[Bedrock Edition only]