Enjoy a day in one of the most dynamic habitats on earth: the salt marsh. Fun-to-read, rhyming verse introduces readers to hourly changes in the marsh as the tide comes and goes. Watch the animals that have adapted to this ever-changing environment as they hunt for food or play in the sun, and learn how the marsh grass survives even when it is covered by saltwater twice a day. An activity on adaptations is included in the -For Creative Minds- section.

Field naturalists have observed the activities of weasels for centuries. Their descriptions were often accurate but sometimes misinterpreted the animals' behaviors and underlying explanations for those behaviors. "Organized natural history" became one of the roots of the science of ecology in the 1920s and by the 1960s scientists had begun to study the biology of weasels with all the critical, objective advantages of modern theory and equipment. Until the first edition of this book appeared in 1989 no one had attempted to explain these results to non-specialist naturalists. Now thoroughly...