Hi everyone, this is shows that Blender is able to render abstracts scenes really easily and quickly.
And an other version:
Here I’ve just played with the particles systems, volumetric lights and the Hue value node into the post processing for the final colors. I’m satisfied because I wanted a kind of submarine imersive atmosphere for a contest even if it looks maybe too noisy while I’ve added a despeckle node and render it with 600 samples into cycles. I think that is due to my lights or closed scene but I’m not sure. If someone have an idea to solve my problem, give me feedbacks.

(apologies for my english)