Fast Repetitive Tick (FaRT) is the term scientists use to describe the flatulencelike noise that herring make as they communicate their locations to one another other. That might be the most amusing description of the uses of bubbles in the natural world, but this entire book is enjoyable and engaging. From the protective hiding places young juniper spittlebugs create to the foamy nest that the African gray treefrog whips up around her freshly laid eggs in the branches above a pool, bubbles are described and pictured. The illustrations are pale and less-detailed versions of scientifically accurate drawings overlaid with entertaining comments, e.g., parent frogs admonish, "Careful, kids!" and "Don't talk to any predators!" The comments may be corny, but they infuse the information with fun. The single-page glossary defines terms simply and effectively, e.g., flatulence is described as "The scientific name for farting." Two spreads of "More amazing facts" offer additional information about each species' habitat, location, and physical attributes. Creative, accessible, and fact-filled.