Beneath the Waves

Hi!
Here is what I've done for Beneath the Waves challenge. Unfortunately, I haven't finished all keyframes, I wasn't satisfied with the third frame at all, no matter what I did to it, and in the end, I even didn't have an inspiration for the fourth frame.
So after all only two images (and only one that I like))
If you're interested in my idea for the challenge, u can check the submission page:
https://www.artstation.com/contests/beneath-the-waves/challenges/34/submissions/24025