There are at least 400 species of sharks, and even though they’ve been around for 400 to 450 million years, many are now threatened with extinction.
http://www.unep.org/Documents.Multilingual/Default.asp?DocumentID=531&ArticleID=5775&l=en
2010 is the Year of Biodiversity and Earth Rangers has teamed up with The United Nations Convention on Biological Diversity to bring you a daily dose of biodiversity basics
Go sharks
Go sharks, go sharks, go sharks! Go sharks go sharks go sharks! Les