jigsaw puzzle

i love doing jigsaw puzzles. i just need time and space.... i want to do big (2500 pieces) 'all blue' color jigsaw puzzle to challenge my skill.... tried hard enough to find a picture of blue ocean and sky... and no living things, no dolphin whatsoever....just the scenery.... but couldnt find any....it's better if it glows in the dark....it will be the ultimate challenge for me...and of course no numbers behind each piece....