Given its enormous girth, it's not hard to believe that the 1,500-pound manatee is actually a marine relative of the elephant. This gentle giant and its habitat have been greatly harmed by humans, but much work has been done to protect manatees from future damage. Readers follow along with the accessible text and full-color photographs as they find out what manatees eat, what their social life is like, and why they are in so much danger from people....

Introduces walruses, discussing their physical characteristics, eating habits, and habitats of the species.

"Simple text and full-color photographs provide a brief introduction to California sea lions".

"A countdown of five of the most captivating blue whales provides thrills as readers learn about the biological, social, and hunting characteristics of these massive marine mammals"--

"A countdown of five of the most captivating polar bears provides thrills as readers learn about the biological, social, and hunting characteristics of these carnivorous marine mammals"--

"A countdown of five of the most captivating sea otters provides thrills as readers learn about the biological, social, and hunting characteristics of these intelligent marine mammals"--