Six years ago I saw this animation on Vimeo. Six years and I still keep it on my favs. It's a bit long, but it's worth it. The plot in the authors own words: "An unknown virus has destroyed almost the entire human population. Oblivious to the true nature of the disease, the only remaining survivors escape to the sea. In great ships, they set off in search of uninhabited land. So begins the exodus, led by one man..."