Off the coast of Southern California, a crowd watches a blue whale rise to the surface earlier this summer. A new study says the population of blue whales off the West Coast is close to historic levels. Nick Ut/AP hide caption

itoggle caption Nick Ut/AP

Rancher Denny Johnson looks over his cattle in Joseph, Ore., in 2011. Conservationists say ranchers raising beef cattle are responsible for the decline of some wildlife. Rick Bowmer/AP hide caption

itoggle caption Rick Bowmer/AP

Two Iberian lynxes at a nature reserve in northern Spain. (February 2006 file photo.) Victor Fraile /Reuters /Landov hide caption

itoggle caption Victor Fraile /Reuters /Landov

An Arizona restaurant sold lion meat burgers in 2010 in an attempt to drum up business during the World Cup soccer tournament held in South Africa. Matt York/AP hide caption

itoggle caption Matt York/AP

Fresh shark fins dry on the deck of an apprehended fishing boat in a declared shark and manta ray sanctuary located in the eastern region of Indonesia. Conservation International//Getty Images hide caption

itoggle caption Conservation International//Getty Images

Click the image to see a full-size version. At least eight shark species, many endangered or threatened, were found in bowls of shark fin soup across the country. Pew Environment Group hide caption

itoggle caption Pew Environment Group