In this article we will discuss about the structure of Finger Sponge (Chalina) with the help of a diagram.
1. It is a marine sponge called finger sponge or deadman’s fingers and is found from Rhodes Islands to Lebrador.
2. It is a highly branched structure of orange red colour and is having a small common stalk.
3. Skeleton is made up of spongin fibres with interspersed silicious monaxon spicules.
4. Each branch is perforated by numerous oscula.
5. Canal system is of leucon type.
6. Reproduction through regeneration and budding and also produces a larval form.