| | Columbian Land Purchase Protects Cerulean Warblers The cerulean warbler was once among the most abundant warblers in the Ohio and Missisippi River Valleys. The species' breeding range stretches over much of the eastern United States, and... Read more | There's Still Time to Join Project FeederWatch You can join thousands of people who are helping scientists find out more about North America's birds simply by counting the birds that visit your backyard feeders. You can sign... Read more | Tracking Whitetip Sharks Scientists have discovered that oceanic whitetip sharks frequently swim through a wider area of open ocean than previously thought. Since these endangered sharks pass through international waters, shark conservation efforts... Read more | Invertebrates Invertebrates are a diverse group of animals that includes over 30 phyla. Invertebrates do not have a backbone, nor a bony skeleton. This large group of animals includes sponges, cnidarians, flatworms, roundworms, segmented worms, molluscs, echinoderms, and arthropods. About 97 percent of all known species are invertebrates. The articles listed below provide information about the characteristics, classification and evolution of invertebrates. | | | | Related Searches | | | | Featured Articles | | | | | | Sign up for more free newsletters on your favorite topics | | | | You are receiving this newsletter because you subscribed to the About.com Animals newsletter. If you wish to change your email address or unsubscribe, please click here. About.com respects your privacy: Our Privacy Policy Contact Information: 1500 Broadway, 6th Floor New York, NY, 10036 © 2012 About.com | | | | Must Reads | | | Follow me on: | | | | Advertisement | |
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