For this new edition, Levinton has updated throughout, and added all-new boxes to highlight research topics of current interest. The coverage of marine mammals and on hypothesis testing have been expanded significantly, and new sections have been added on subtidal rocky reefs, metapopulations, marine invasions, marine protected areas and no-take zones for fishery, and molecular approaches to marine biology and fisheries. The CD-ROM "Marine Biology Explorations" currently available as a supplement, will be revised to include the guided tour environments (about 180 color slides) and a self-test keyed to the chapters, and bound into the back of each copy (to encourage student use and to hamper used-book resale). The author maintains a website linked to the book, and would also prepare, as an ancillary, PowerPoint lectures incorporating the line illustrations from the text, deliverable on CD-ROM as an incentive for course adopters. There is also an associated "Marine Biology Lab Manual" ("Exploring Marine Biology", by Paul Haefner).