This reminds me of the Gojira song titled 'Flying Whales', only with Jellyfish instead. I love that feeling!
Other than that, I really like how the jellyfish looks like a blue-hued Sun Jellyfish floating towards the sun. it's a kinda subtle and trivial detail, but it makes this work much more meaningful and deep in my eyes. Another thing I really like is the brightness in the top right corner and the darkness in the bottom left corner. Not only does it give the image a tilted perspective, it also shows a sense of duality in the location of the jellyfish; caught in the middle of the two extremes but beginning to choose a side (since it's slightly closer to the bright side).
I'm probably reading way too much into this picture, but it's beautiful nonetheless; great work man! I might even be able to work with this for this year's AIM contest!