When I was 9 or 10, my parents took me snorkeling over a reef, and I’ve loved coral ever since. It’s beautiful, it’s fractal, and sometimes it’s even funny. If you’ve ever seen one suddenly retract, you know what I mean.
So, my final will be a sketch with an interactive coral and a sea of particles. Er, fish.
Ocean currents and fish schooling will be simulated by flocking and steering algorithms. When they get too close to the coral, it will suddenly retract and startle (repel) the fish! The retraction works on a delay, so if any fish manage to reach the coral, they will be “stunned” and go belly-up, then float to the surface. You can guide the fish by creating temporary attractors, of variable strength/duration.
Coral reef as portrayed by a certain popular animated children’s movie: