Sponge (tool)

More information about the animal can be found at Sponge (animal)

A Sponge is a tool that is used for cleaning and washing. The sponge is made of a special material, with many holes. By rubbing the sponge against dirty surfaces, the dirt can be removed.

Today, there are also artificial sponges.

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  An artificial sponge, made of polyurethane
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  Close up of the artificial sponge
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  A natural sponge. This is the skeleton of a sponge from the Demosponges