Within the German non-profit project WissensWerte, a hand drawn, animated short-film called Awesome Oceans has been published. It shows how fascinating this habitat is, but also how human behaviour endangers it.
The video can be watched here: https://youtu.be/UHYBH0Vn-2Y
It has a Creative Commons license and can be used and shared for free in any way.
You can download it here: http://edeos.org/en/portfolio/awesome-oceans/