The Underworld

<b><i>NEW YORK TIMES</i> BESTSELLER • From bestselling author Susan Casey, an awe-inspiring portrait of the mysterious world beneath the waves, and the men and women who seek to uncover its secrets</b><br><br><b>“An irresistible mix of splendid scholarship, heart-stopping adventure writing, and vivid, visceral prose." —</b><i><b>Sy Montgomery, New York Times best-selling author of The Soul of an Octopus</b></i><br><br><i></i>For all of human history, the deep ocean has been a source of wonder and terror, an unknown realm that evoked a singular, compelling question: <i>What’s down there</i>? Unable to answer this for centuries, people believed the deep was a sinister realm of fiendish creatures and deadly peril. But now, cutting-edge technologies allow scientists and explorers to dive miles beneath the surface, and we are beginning to understand this strange and exotic underworld:  A place of soaring mountains, smoldering volcanoes, and valleys 7,00