Brothers, Hugh and Harry Heron, fly from salt pond to salt pond along the Rhode Island coastline inspecting the ponds and discussing water quality issues as well as the characteristics of each pond. The artistically rendered herons are superimposed on actual photographs of the ponds and environs. Causes of water pollution, like algal blooms, are presented as well as denitrifying septic systems, aquaculture, water testing and healthy ecosystems. Each page has the two heron brothers talking in verse with a substantial fact on the bottom of the page so that the book is appealing to both children and adults. The facts give more detail about the ponds, great blue herons and the causes of pollution. A glossary and discussion questions add to the educational value of the book.
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