All Sponges articles

View all items with this category.

  • Sea-Sponges
    Features

    Sponges

    A sponge is a member of the phylum Porifera. It is a simple animal with many cells, but no mouth, muscles, heart or brain. It is sessile: it cannot move from place to place the way most other animals can. A sponge is an animal that grows in one spot ...