Sunflower – A strange dream and one I only have a vague feeling about.
So it seems you were exploring a level of your being, of Life, that is about reproduction – not necessarily human. It was about being aware that what you saw had been set up to help these cells/creatures survive.
That level of life is about the internal world we live in our body, the life of cells and creatures. That is why there was mud everywhere – the basic material of life and death. The jellyfish were also a reminder of that at that level of experience there re dangers for your conscious mind if you are not careful. You managed to get out of that stare of mind.
It would be good to find your own feelings about the dream. Try using http://dreamhawk.com/dream-dictionary/practical-techniques-for-understanding-your-dreams/#TalkingAs