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I saw this movie (or maybe it was a TV show) a long time ago.
All I remember is a larger number of people waking up in water and making it to the shore, I want to say they died and are waking up in an afterlife, but again the details are hazy. I remember there were these large towers near the shore the people got food and clothing from.
I was young, so I'm thinking it came out before 2004. That's live action, not animated.