Structure of Sea Pen (Pennatula) | Zoology
In this article we will discuss about the structure of Sea Pen (Pennatula) with the help of diagrams. 1. It is commonly known as "sea pen" and is found in the eastern coasts of North America. 2. The colour is usually red and the fully formed colony measures about 10 cm in height. 3. The colony is elongated, dimomorphic, [...]