CONTENTS. 



CHAP. PAGE 



I. OCEANOGRAPHY 9 



II. SHALLOW- WATER FAU.NA .... 23 



III. SHALLOW-WATER FAUNA OF THE TROPICS , 55 



IV. SURFACE -SWIMMING FAUNA (INVERTEBRATES) 82 



V. SURFACE-SWIMMING FAUNA (VERTEBRATES) . 118 



VI. DEEP-SEA FAUNA 135 



VII. COMMENSALISM AND PARASITISM . . . 146 



VIII. THE ORIGIN OF THE MARINE FAUNA . . 172 



