Sponge — Minecraft block

Sponge

Ocean Monument block that absorbs up to 65 adjacent water source blocks when placed, turning into a wet sponge that must be dried before reuse.

Block ID minecraft:sponge
Mod Vanilla
Game versions
1.21

Description

Sponge is obtained from Elder Guardians, which drop one on death, and from dedicated rooms inside Ocean Monuments. Once placed in water, it immediately absorbs up to 65 water source blocks in a flood-fill pattern radiating from the placement point, removing them as though they never existed.

After absorbing water the block becomes a wet sponge, which no longer absorbs anything. Drying methods: place in the Nether (dehydrates instantly), smelt in a furnace (returns the dry form and fills an empty bucket if placed above one), or place in a dry biome and wait.

Sponges are invaluable for draining Ocean Monuments before looting, clearing flooded caves, and setting up underwater construction sites. They are also used decoratively in aquatic builds. Each Ocean Monument has a dedicated room with up to 30 sponges.