Sky & Sea

I'm not sure I will be able to solve this puzzle. I didn't understand what the puzzle was until I had it in my hands. Each piece has two images on it, one part of a butterfly and the other part of a fish. It isn't necessarily possible to tell if you're looking at a part of a butterfly or a fish. I'm considering trying to solve it with the image on the bottom as this might prove to be less distracting then trying to look at the piece and find one that continues the image. I have done a few lenticular puzzles and they were a lot of fun, but they had only one subject on each piece. If I get this puzzle solved, it will be a major accomplishment