Glow has page after page of stunning photographs of bioluminescence.  On a black backdrop, the large white text starts by introducing and defining the concept of bioluminescence.  While found on land and in the air, more than anywhere else, bioluminescence is found in the water.  The book continues with a simple explanation of the chemicals animals produce that creates the glow of bioluminescence.  Animals glow to hunt, to hide, to call for help, and lose an enemy, and so on.  The simple text is supplemented on each page with a more indepth scientific explanation of the animal pictured and the concept being highlighted.

End papers include an explanation of how the photographs were taken as well as a diagram of each creature featured in the book, highlighting where on the creature the bioluminescence occurs.  Scientific name, size, and location included.  Also contains a bibliography.

The combination of the large text with simple concepts and vocabulary and the small text with the indepth scientific explanations make this a wonderful choice for a mixed-age partner read.