Davies (a zoologist and children's book author) introduces a likely brand-new—and immediately intriguing—concept to young readers: that there are vast quantities of living things (microbes) that are smaller than the eye can see. She does it not with dull lists of Latin terms and classification charts but instead through creative, easy-to-relate-to analogies, and itchy-but-cool facts about the microbes that live on and in us. An emphasis on scale, particularly size and quantity, helps children grasp the abstract concepts... The tone is light and inquisitive yet also scientifically precise, covering topics such as the shape and variety of microbes, their function, and reproduction.
—The Horn Book
Read a detailed review of Tiny Creatures on the Brain Pickings book blog.