My good buddy at work Steve Plunkett set us an animation challenge for us animators to create an animation based around a circle. So we could do whatever we liked but it had to involve a circle. This was a really fun exercise because I'd been making my way through a few courses and tutorials in After Effects so doing this really put my skills to the test in using masks and different effects in the software. I'm not sure where the idea for the submarine came from but I hope ya like it! : - )