Ark is a 2007 award-winning animated sci-fi short by Grzegorz ‘Greg’ Jonkajtys. A brief and mysterious summary below:

“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…”

The full short has been embedded at the bottom!