A variety of rare blue species--from the blue lobster to the blue black bear--are rare and unique for a reason.
Travel across Earth to discover eight species that are blue in color and are either naturally rare, threatened, or endangered.
Panoramic illustrations and a playful main text prompt a search for the blue species at hand, while the page-turn and informative sidebars zoom in to reveal a closer look at the species.
There's a lot to uncover about the Karner blue butterfly, blue .