Equal parts memoir, adventure tale, and call to action, Sea Change: A Message of the Oceans has become a classic of environmental literature, at once the gripping adventure story of Earle's three decades of undersea exploration, an insider's introduction to the dynamic field of marine biology, and an urgent plea for the preservation of the world's deteriorating ocean ecosystems. Featuring a gallery of color photographs and a new preface by Earle, this edition of Sea Change arrives at a uniquely pivotal time when its message is needed more than ever before.