In 1997 a container ship called the Tokio Express lost a collection of containers when it was hit by a wave. Now, there's not generally any bright side to accidentally spilling twenty containers worth of stuff into the ocean.
Except maybe a little when it's twenty containers of nautical themed Legos.
I won't bore you with the details, the BBC did a much better job of it than I would have. You can find the article here.
Lego Lost at Sea -- The Facebook, so you can track the phenomenon. As time wasters go, it's probably one of the better ones I've found lately.