Book excerpt: Understanding the Oceans brings together an internationally distinguished group of authors to explore the enormous advances in marine science made since the voyage of HMS Challenger a century ago. The book draws inspiration from the seminal contributions stemming from that voyage, and individual chapters show how succeeding generations of scientists have been influenced by its findings. Covering the whole spectrum of the marine sciences, the book has been written and edited very much with the non-specialist reader in mind. Marine scientists, whether students or researchers, will welcome this authoritative comprehensive overview of their subject and its history; other scientists will find the book to be an accessible and informative introduction to marine science and its historical roots.