Examines the geography, plants, animals, trade, and resources of the polar seas. The Seas and Oceans series covers all the major bodies of water that cover three-quarters of the planet's surface. Information is given on selected mammals, birds, reptiles, fish, and invertebrates found above and below the surface of each sea and ocean. Detailed maps show the landmasses that surround and the islands that populate each expanse of water. Each book also shows how the respective sea or ocean has influenced the societies that live around it.