Contents 8 The Earth and its Oceans 



17 Men Against the Sea 



20 Pytheas - Into the Unknown 



26 Ferdinand Magellan - Breakthrough to the Pacific 



36 Captain James Cook - In Search of a Continent 



46 James Clark Ross - South to the Antarctic 



56 Fridtjof Nansen - Pioneer of the Arctic 



66 The Nautilus - Under the North Pole 



75 Life in the Sea 



82 Creatures of the Sea 



92 The Discovery of Plankton 



98 The Movement of Fishes 

 108 The Great Chain of Life 

 112 Marine Biology as a Science 



123 Sunken Cities and Forgotten Wrecks 



128 Ancient Civilizations 



132 Ships and Navigation 



134 Archaeologists at Work 



140 Cities Under the Sea 



150 Lost Habors 



160 Forgotten Wrecks 



170 New Frontiers 



173 New Attack on the Sea 



174 The Endless Search 

 190 The Floor of the Sea 

 202 The Currents 

 214 The Restless Tides 

 224 Edge of the Sea 



234 Future of the Sea 



248 Facts about the Sea 



270 Books about the Sea 



274 Index 



290 Illustration Credits 



Acknowledgment is made for various quotations appearing in this book : pp. 66-73 from Nautilus 90 North, by 

 Commander William Anderson and Clay Blair, Jr., by permission of Ttie World Publishing Company, New York: 

 pp. 57 from The First Crossirjg ol Greenland, by F. Nansen, by permission of H. Aschehoug & Co. (W. Nygaard) 

 A/S, Oslo: pp, 36-^ from the Journais of Captain Cook on his Voyage of Discovery, ed. by J. C. Beaglehole 

 by permission of the Hakluyt Society. London. 



Library of Congress Catalog Card Number 62-14615 

 © Geographical Projects Limited. London 1962 

 Printed in Germany by Clir. Belser, Stuttgart 



