NOAA
Noaa: Endangered Whales
"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.
Smithsonian Institution
National Museum of Natural History: American Mammals: Killer Whale
Killer whales live in all the oceans between the Arctic and Antarctic ice packs. Given this enormous range and their predatory lifestyle, it is not surprising that they are adaptable, with an excellent memory, intelligence, and a...
Ducksters
Ducksters: Dolphins
Kids learn how dolphins eat, sleep, and live together. Bottlenose dolphins and orcas travel the ocean in pods.
Defenders of Wildlife
Defenders of Wildlife: Killer Whale
A concise site from that looks at the size, population, lifespan, range, habitat and diet of the Killer Whale.
Curated OER
Killer Whale
This site provides two pages which briefly explore the variety of species of marine mammals.