Wonderful shot! I can feel the motion and I love the colors.

Love the Jellyfish image. The blue is... well, blue and very saturated. Great images.

If this is yours, there is a website with tons of wallpapers...all of them stolen and they are using offering jellyfish images very similar to this. I am certain they are yours. I found the site initially by googling the phrase "ferocious horse" ( needed a peek at a horses facial expressions for drawing reference)and clicked one of the top 5 links.