Ocean, New Edition (DK Definitive Visual Encyclopedias)An enhanced edition of DKs exhaustive guide to the underwater world. This authoritative, sumptuously illustrated encyclopedia is now in its third edition. Illustrated with a blend of beautiful and informative illustrations, maps, and photography, it is a broad ranging, in depth guide to both physical oceanography and marine life. A comprehensive introduction explains important principles and processes, from the geology of the seafloor to the chemistry