What does the anatomy of squids tell us about the biodiversity of these organisms?

Squid is a unique and interesting animal with elongated bodies. These have two tentacles, eight arms in total and very large eyes. These belong to Phylum Mollusca.  

Squids have various adaptation in them. These can change color. They can also create light by using the phenomenon of bioluminescence and can release ink to get rid of any potential threat like sharks etc.

answer; the president uses mass media to gain support for policies;