You may have to do some hunting first, but if you click on the CruiseReviews.com link (first one in th elist above) it will take you back to the home page. Click on RCL under the Cruise reviews at the top. Then from there you can choose the Mariner and see a bunch of reviews of it. I'm sure someone in that list has included a link to pictures.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise, Magic 1/14
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013