underwater photography

This is something that highly interests me, but yet I have never even attempted. http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=Mbt8c4FHWD6VsM&tbnid=yDVMf503dvBujM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.smashingmagazine.com%2F2008%2F10%2F19%2F25-beautiful-examples-of-underwater-photography%2F&ei=bECpUvPAM9TOkQf6zYGACA&psig=AFQjCNEhhwJ_ivLNilrBxyam4usFgFaImQ&ust=1386910173845882\\ http://api.ning.com/files/S-wgfARXbnxZV0Pw5OlSw4gvaPhoepX82AIO*UwYoXlOIVkQ9FM9WZ4MMaWeL7wGrQ2ir1Ve8*zulNPEEnp*VR1V2p3Il0sc/zen004.jpg http://cdn.buzznet.com/assets/users16/hugsxhairballs/default/underwater-photography-truly-work-art--large-msg-129832768314.jpg http://www.123inspiration.com/wp-content/uploads/2013/02/Underwater-Photography-by-Neil-Craver-6.jpg http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=jsMWHeNk_-KFWM&tbnid=p2awViN3_vHLtM:&ved=0CAUQjRw&url=http%3A%2F%2Fwww.aphotoeditor.com%2F2012%2F03%2F12%2Fdiving-dogs-photos-boost-photographers-career%2F&ei=CkGpUte9D4eDkQe0-4GICQ&psig=AFQjCNHhJxvtl413d4See2PozeZ1fNxGMw&ust=1386910335200400 https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcTXfvsM-E1IkyiR5Dvlyb7VwXYUWHV64lqJjrtbhB-23mkiE4kvCg