Franklin in the Dark by Paulette Bourgeois, illustrated by Brenda Clark

Franklin has a problem, he is scared of small, dark places, like his shell.  Even though he tries he just can not crawl inside like a turtle should do, so he drags his shell around behind him.

Franklin finally decides to go out looking for a way to overcome his fear.  He finds there are many animals afraid of what they are expected to be. 

A nice read that would be helpful for a child that has a specific fear.