Underwater TNT

This page describes an education-related feature.

This feature is available only in Minecraft Education or when enabling the "Minecraft Education features" cheat setting in Bedrock Edition.

Underwater TNT

Renewable	No
Stackable	Yes (64)
Tool	Any tool
Blast resistance	0
Hardness	0
Luminous	No
Transparent	Partial
Flammable	Yes
Catches fire from lava	Yes
Note block instrument	Default (Harp)

Underwater TNT is a block that can be used by the player to initiate a controlled explosion underwater.

Obtaining

Breaking

Underwater TNT can be broken instantly with anything. However, primed underwater TNT cannot be broken, as it is an entity.

Block	Underwater TNT
Hardness	0
Breaking time (secs)
Default	10.05 (JE) 0.05 (BE)

Legend

• incorrect tool, drops nothing
• correct tool, drops nothing or something other than the block itself
• correct tool, drops the block itself
• italicized can be instant mined

Crafting

Ingredients	Crafting recipe	Notes
Sodium + TNT		‌[Bedrock Edition and Minecraft Education only]

Usage

Underwater TNT blocks can be activated the same way as a normal TNT block.

Behavior

Once activated, it explodes like a normal TNT block. However, unlike the traditional TNT block, it can destroy blocks underwater. It can still explode in the air, although it does not work in lava. Underwater TNT has the same delayed detonation rate as normal TNT.

Sounds

Generic

grass sound type
Sound	Closed captions	Source	Description	Identifier	Translation key	Volume	Pitch
	​Block broken	Blocks	Once the block has broken	dig.grass	subtitles.block.generic.break​	0.7	0.8–1.0
	​Block placed	Blocks	When the block is placed	place.grass	subtitles.block.generic.place​	0.8	0.8–1.0
	​Block breaking	Blocks	While the block is in the process of being broken	hit.grass	subtitles.block.generic.hit​	0.3	0.5
	​Footsteps	Players	Falling on the block with fall damage	fall.grass	subtitles.block.generic.footsteps​	0.4	1.0
	​Footsteps	Players	Walking on the block	step.grass	subtitles.block.generic.footsteps​	0.3	1.0
	​Shovel flattens	Blocks	When a shovel creates a dirt path	use.grass	subtitles.item.shovel.flatten​	1.0	0.8
	​Footsteps	Blocks	Jumping from the block	jump.grass	subtitles.block.generic.footsteps​	0.11	1.0
	​Footsteps	Blocks	Falling on the block without fall damage	land.grass	subtitles.block.generic.footsteps​	0.21	1.0

Unique

Data values

ID

Name	Identifier	Alias ID	Numeric ID	Form	Item ID[i 1]	Translation key
Underwater TNT	underwater_tnt	tnt / 2	1240	Block & Giveable Item[i 2]	Identical[i 3] (Numeric: -985)	tile.underwater_tnt.name

Name	Identifier	Numeric ID	Translation key
Primed Underwater TNT	tnt	65	entity.tnt.name

Block states

History

Bedrock Edition

Bedrock Edition
1.4.0			beta 1.2.20.1				Added underwater TNT.
1.21.0			Preview 1.21.0.21				Underwater TNT now appears in the Creative inventory when the Education edition toggle is on.

Minecraft Education

Minecraft Education
1.0.27							Added underwater TNT.
1.21.03			Preview 1.21.01.0				Underwater TNT now appears in the Creative inventory.

Data history

Issues

Issues relating to "Underwater TNT" are maintained on the bug tracker. Issues should be reported and viewed there.

Trivia

• The inclusion of sodium is a reference to elemental sodium's explosive reaction with water. All alkaline metals react with water violently to form hydrogen gas and a hydroxide. The heat generated often ignites the gas.