In this article we will discuss about the structure of Euspongia or Spongia with the help of a diagram.
1. It is a marine sponge of commercial value and is found in Mediterranean Sea, West Indies and along American coasts.
2. It is commonly found in shallow water attached to substratum.
3. Skeleton is made up of spongin fibres. The silicious spicules be in a absent.
4. It is usually of a globular shape with numerous oscula mounted on well marked projections-the canals.
5. Its dried skeleton is commonly used as bath sponges.