The listing went up on eBay last June: a pair of African elephant tusks weighing 123 pounds were for sale, with no documentation as to their origin or age--and somewhere in an elephant graveyard on the Serengeti, a pile of elephant bones must have turned over in their grave.

The tusks, which eventually sold for over $21,000, were just one of the many troubling items for sale on the online auction site, according to . The nonprofit group conducted a three-month investigation into online sales of endangered animals, and tracked over 7,000 sales of both animal products and live animals, all available for purchase with just a few mouse clicks.