Short intro animation needed for Graphic Designer

Hy! I’m trying to establish a small graphic design company. I have my logo and overall feel already set up. I would still need a short animation for my logo as an intro for various projects. I allready made my logo in Blender and I have it as an object that’s all I did because i’m kind of a NEWb in Blender. If anny of you guys could spear some time in doing something I’d be gratefull. It has to be a maximum of 6 seconds. I’m looking for a overall dark violet fell to the intro verry jellyfish like. You’l se what I mean once you se the logo.
I can’t seem to uplod my files via attachements so i will provide this link to them > I hope it works!
Thanks a lot.

PS: I visualize the whole thing under water!