Smithsonian Institution
Smithsonian National Zoo: Zoogoer Magazine: River Dolphins of No Return
Robin Meadows's article, "River Dolphins of No Return," focuses on the four types of dolphins worldwide that live only in rivers (Amazon River dolphin, Yangtze River dolphin, Indus and Ganges river dolphins).
A-Z Animals
A Z Animals: Animal Facts: River Dolphin (Platanistoidea )
Provides photographs and a fact card about the river dolphin. Discusses the four species and where they are found, physical features, and communication by echolocation.
Ducksters
Ducksters: Dolphins
Kids learn how dolphins eat, sleep, and live together. Bottlenose dolphins and orcas travel the ocean in pods.