- Each book has been vetted by a recognized expert in that particular field; his/her credit appears on the "About the Author" page.- Photographs are by award-winning photographer David Hall. His pictures have appeared in various magazines including National Geographic, Audubon, Smithsonian, and Time.- More than any other series, Undersea Encounters paints a complete picture of marine life. It is a natural fit for third- to fifth-grade curriculums and could be used in the classroom.- A Table of Contents, glossary, index, and "Further Resources" section are included in every book.Grades K-4 Science StandardsLife Science: Content Standard C- An organism's patterns of behavior are related to the nature of that organism's environment.- Each plant/animal has different structures for walking, holding, seeing, etc.- Plants and animals have life cycles that include being born, developing into adults, reproducing, etc.- Each plant or animal has different structures that serve different functions in growth, survival, and reproduction.