Every time I read news of people finding old messages in bottles I find it fascinating.
But then at the same time I wonder how many people it prompts to dump their own bottles into the sea (i.e. littering) anytime one of these headlines blow up
E: sorry I'm apprehensive about dumping plastic in our oceans. Damn. Didn't realise this was a pro-pollution community...
Well yeah, I'd hope the people who do this use glass bottles, but let's be real, they'll use whatever easily-sealable bottle is most convenient. So plastic bottles.