stock:-
under water
http://winkstock.deviantart.com/art/36-underwater-stock-32482843
http://georgina-gibson.deviantart.com/art/Premade-BG-Under-The-Sea-1-252602703
http://winkstock.deviantart.com/art/36-underwater-stock-32482843
http://georgina-gibson.deviantart.com/art/Premade-BG-Under-The-Sea-1-252602703
bottle
http://helenarothstock.deviantart.com/art/1765-Vintage-Corked-Bottle-2-235651980
http://www.freeimages.com/photo/462883
http://www.freeimages.com/photo/582414
http://hb593200.deviantart.com/art/Message-in-a-bottle-002-HB593200-380218204
http://helenarothstock.deviantart.com/art/1765-Vintage-Corked-Bottle-2-235651980
http://www.freeimages.com/photo/462883
http://www.freeimages.com/photo/582414
http://hb593200.deviantart.com/art/Message-in-a-bottle-002-HB593200-380218204
This tutorial helped me
http://www.deviantart.com/art/Under-Water-Easy-Photoshop-Tutorial-279763370
http://www.deviantart.com/art/Under-Water-Easy-Photoshop-Tutorial-279763370