Resource provides information about endangered and depleted seals and sea lions. Great photos of the animals and clear, readable information.

"There are currently seven species of cetaceans in U.S. waters that are protected under the Endangered Species Act." This site provides links to each species as well as provides colorful and engaging pictures.

Learn some facts about the black rhinoceros, an endangered species, in this book. Includes audio narration in English and Spanish with text in English.

Learn some facts about the vaquita, a type of porpoise that is endangered. Book includes audio narration in English and Spanish with text in English.

The National Oceanic & Atmospheric Administration sponsors this introductory article and related links that tell why marine mammals are valued by the public for their great aesthetic, recreational and economic significance.