Describes oceans, including how they are formed, ocean plants and animals, how people and weather change oceans, the Atlantic Ocean, and the Pacific Ocean.
Examines the history of submarines in the U.S. Navy, describes their characteristics, looks at different types ofsubmarines, and discusses how they are used, their crews, and their future.
Examines the history of ships in the U.S. Navy, describes their characteristics, looks at different types of ships, and discusses how they are used, their crews, and their future.