Interestingly, it seems that the reason another old (though not nearly as old as this one) shipwreck (Vasa) was so well preserved is that humans polluted the wa

Interestingly, it seems that the reason another old (though not nearly as old as this one) shipwreck (Vasa) was so well preserved is that humans polluted the water too much for life to survive. https://en.wikipedia.org/wiki/Vasa_(ship) https://en.wikipedia.org/wiki/Vasa_(ship)