This site provides photographs, animations, essays, teaching resources, multimedia, and other information about biological systems and organisms. It features a monthly contest and quiz in which students and teachers identify a mystery photo to win prizes; specialized biology galleries including collections of photographs with informational text; a series of articles called "The Lives of Micro-organisms: A MicroNaturalist's Notebook" featuring information about microbes; teaching resources such as program guides, study guides, and annotated links; and a list of products including online ordering and direct digital delivery.