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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.
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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.
