Sellers are flouting eBay's self-imposed ban on the sale of elephant ivory by listing it under pseudonyms.
An investigation by the BBC and legal experts found ivory objects were often listed as "bovine bone".
We bought three such items on eBay UK and tested them in an independent lab. Two were confirmed to be made of ivory.
An analysis by ivory trade experts also indicated that thousands of elephant ivory objects have been sold on the site since the company banned its sale.