Give the scientific name of bath sponge.

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks for the scientific name of the bath sponge. We need to focus on the specific type of sponge commonly used for bathing.

2. **Scientific Classification**: The bath sponge belongs to the Phylum Porifera, which is the phylum that includes all sponges.

3. **Class Identification**: Within the Phylum Porifera, the bath sponge is classified under the class Demospongiae. This class is characterized by sponges that do not have a true skeleton made of spicules.

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