Block
Sponge block in Minecraft
Present since 1.0 or earlier Mined with: hoe Stack size: 64
A Sponge soaks up water around it when placed, turning into a wet sponge.
It is obtained in the Furnace from Wet Sponge. It is mined with a hoe.
What it does
It removes water within several blocks, which is how players drain ocean monuments. You find sponges in monument rooms, and elder guardians drop wet ones. Dry a wet sponge to reuse it.
How to craft
Furnace 
Wet Sponge → Sponge
// Slots with several items cycle through every accepted option.
Tags
#minecraft:blocks_dolphin_jump#minecraft:blocks_fluid_flow#minecraft:blocks_lava_fire_spread#minecraft:blocks_motion#minecraft:blocks_motion_in_heightmap#minecraft:blocks_motion_in_heightmap_no_leaves#minecraft:blocks_motion_no_leaves#minecraft:causes_suffocation#minecraft:entities_can_teleport_to#minecraft:ice_melts_when_destroyed_above#minecraft:mineable/hoe#minecraft:sulfur_cube_swallowable
Sponge · FAQ
How do you get Sponge in Minecraft?
In a Furnace: 1 × Wet Sponge gives 1 × Sponge. Mining the block drops it.
What is Sponge used for in Minecraft?
It drains water from an area.
What tool do you need to mine Sponge?
The fastest tool is the hoe.