A convincing account of things marine, of the ocean and the many facts about it, which gives a sweeping picture of the variety of life and activity on, in and around the seas. Here are the facts -- and for all of them, the still unknown factors, the mysteries, are indicated. Here are details of the history of the ocean, its boundaries, its floor, how it gets its salt, the rivers in the sea, tides, waves, smallest organisms, weeds, kinds of fish life, birds. There is the picture as it relates to man,- fishing, mining, the sailors, the boats and their adventures. There is also the development of guards for safety,- charts, beacons, routes, the studies of the effects of the sea on climate, the dangers of the famous Capes... All in all a hardy tome that misses none of the glamor, drama or fascination of oceanology. Very good reading, in the field of natural science.