These make good background images (tiles). They are faded which makes it easier to read printing that goes over top of them. I've used the second small shark as the background on this page, to give you an idea of how it looks. If usually increase the size of my font or make it bold when using faded images as backgrounds.
Also note how I've used a TABLE with a white background to hold the shark images. This keeps images (or important text) from competing with the background image.
Click on any of the sharks to see it used as a background.