I believe cartoons or animations are a powerful way to engage students and explain otherwise esoteric concepts. These are science animations I have used, will use or would use if I taught the topic or course
Making waves: The power of concentration gradients - Sasha Wright
The constant motion of our oceans represents a vast and complicated system involving many different drivers. Sasha Wright explains the physics behind one of those drivers -- the concentration gradient -- and illustrates how our oceans are continually engaging in a universal struggle for space.