How Deep is the Sea by Anna Milbourne

Along the same vein as the books I've already reviewed by this author, How High is the Sky and How Big is a Million, Pipkin the penguins sets out to discover how deep is the sea.  Includes a fold-out poster showing little children how deep the sea is.  My two littlest ones just loved Pipkin in his many adventures.  He is curious just like they are, and the visuals help them to see how far it is to the very dark deep bottom of the sea.