This is a stellar and surreal work. The incorporated images that flow into the patterns are hidden nicely and blend well. There's a very nice range of tones here, however it would have been nice to see dark, dark blacks and light whites. I assume these tones were lost because of the way the piece was scanned or photographed. Also, the piece seems unfinished. My focus gets stuck in the abundance of white spaces. Perhaps you could have put some sort of light texture in the background rather than just white voids. Even black voids would have been preferable. I would continue to work on this piece, at least in some if not all of the areas of negative space. Maybe develop the theme of the small swirls of bubbles in the middle of the piece and repeat it in those areas. Overall, this is a really sick piece. I hope you can get up a higher quality version of this piece in the near future.
Very nicely achieved level of intrinsic detail!... if you could see inside a dream of MC Escher, this is probably how it would look like, I enjoyed how the fish, the snake and the femur-hip are all blended into the swirls!