Coriolis movie of draining pool?

So we all know the Coriolis effect isn't demonstrated in a bathtub or toilet. Are there any videos online of the size of pool needed to demonstrate it? I saw one in grad school--black and white from the '50s--an indoor, above-ground pool with a drain in the center, allowed to settle for a week before the drain was removed. Haven't found anything like it make it to the Web, despite searching off and on for a year. Anybody else find something similar? Would help my class discussion a little...

Thanks,
Charles