I always wonder that when I'm in the bath...

I have another question... Yonks ago I was told by this bloke I used to work with that him and his wife knew this lady and her water's broke and nothing was happening so they sent her home and told her to come back when things were actually happening. Anyway this lady and her husband went down the beach for a swim and apparently since her water's were broken 'she filled' up with sea water and he reckons it drowned the baby! I don't understand how the baby could drown when it's spent 9 months in amiotic fluid... and when women birth in water? I mean I personally wouldn't go swimming at the beach or in a pool after my waters had broken at risk of infection I would think... But otherwise is this just a story?