Photographs and text examine the world of mammals, depicting their development, feeding habits, courtship rituals, protective behavior, and physical adaptation to their various ways of life.

"Take a plunge into the dephts and encounter speedy swimmers, deep divers, and bottom feeders. From stealthy sharks to curious catfish, find out fantastic fishy facts about how these underwater creatures hunt, hide, drive, and glide."--

Text and illustrations present information on the parts of the body and how they work. Be an eyewitness to the amazing world of your body -- from the incredible framework of the skeleton to the millions of tiny cells that make your body work. Discover how muscles help us move. See the network of nerves inside your head. Find out how X-rays work.

A photo essay about the range of plants and animals found in fresh water throughout the year, examining the living conditions and survival mechanisms of creatures dwelling at the edge of the water, on its surface, or under the mud.