Nature is cool, really cool. This is video taken from the Maldives and it shows just how Mother Nature has her system of checks and balances in place. It is truly spectacular how this huge school of fish can move in unison.Especially when these movements prevent them from being eaten. 

The reef sharks, on the other hand, are pretty amazing in their own way. The way they work in unison to almost herd the school of fish into the proper place then at about :30 into the video you see the attack. The bird on the beach thinks he is about to get a free meal and winds up whiffing in his attempt to take advantage of a stunned fish floundering in the the shallow water. Yep, nature is pretty cool!