I'm no oceanographer (hell, I never even watched Jacques Cousteau) so I never know what I'm looking at when shots like this come up. I can recognize it as something vaguely out of Spongebob (sorry, I have kids) and appreciate it for it's abstract beauty. Really good work.
The colours in this are really good, and the composition works well. Would be great to see this in full size as I think a lot of the small details are lost in the small size. Also, is there a reason you didn't use the full 800x800px?
Love the colors in this shot of the jellyfish - title is humorous too! Those amber yellows really pop off the dark backdrop and draw the eye. I was going to complain that the image clarity is a tad soft, but now I think it works a bit in this composition's favor. The reason is that it gives it a touch of a dreamy look - not to mention gives the jelly's a 'feel' that they would be soft to the touch ...if one dared to do so.