Wet Sponge

The wet sponge is a version of the sponge block that lacks its water-removing property. When placed, it emits water droplets from its sides and bottom, similar to the way any other block emits the droplets from the bottom when water is directly above it.

Obtaining
When water touches a sponge block, it converts it into a wet sponge.

Smelting
This recipe will be added in the upcoming 1.8 release.