April tragidy at Tenerife

I just came across this UK DailyMail article earlier this year which I missed to notice when it happened in April of this year. As customery of  DailyMail articles, a long headline just about tells the whole story:

Two British doctors swept to their death by waves as they try to rescue their children from the water at holiday beach off Tenerife (Read more: http://www.dailymail.co.uk/news/article-2598611/Two-British-women-drown-sea-trying-rescue-children-holiday-island-Tenerife.html#ixzz39WMUsPt8).

It is the human tragidy we wish it'll never happen. One of the most relevant key description in the words of one of the rescurers in the article is this:

"What they had been doing was standing on the rocks looking at the waves crashing in. Unfortunately one of those waves was so big it crashed in and swept them out to sea. The girl I rescued wasn’t even in swimwear, she was in shorts and a T-shirt."

Just everyday ordinary happenings, but this time it led to tragidy! How can one prevant it even if we know it will happen?!? But we do know it will happen, just that we don't know where, when, how, and why they will happen!