How do the oceans work? Essentials of Oceanography, Eleventh Edition, takes an interdisciplinary approach to help students answer this question. The latest edition brings together the interrelated spheres that compose Earth's systems as they relate to the oceans: geological, chemical, physical, and biological. Trujillo and Thurman balance rigor and accessibility, combining in-depth discussions of oceanographic concepts with highly visual and interactive study aids to demystify the science for the non-science student. This unique combination has made Essentials of Oceanography the best-selling brief book-and one of the best-sellers overall-in oceanography.