Got my 358th mount earlier today. My newest mount is the Great Sea Ray. I had originally purchased this mount off of the Auction House, But did not realize you had to fish it up to earn the Achievement for getting it.
So behold, I go fishing tonight in Zandalar and a 2nd Great Sea Ray drops. So selling this 2nd one I got on the Auction House now. :-)
Xanlorash [The Insane]
Follow me on Twitter: @Xanlorash