 PLOT: SPOILER: Sharks intelligence is being enhanced genetically in  this movie, so lets assume it is possible, because that is the  whole point of the plot. In the end, we learn that the sharks plan  is to flood the facility in order to make an escape, because above  water the fences of the facility are "just plain steel", and not  titanium. So they flood the whole facility in order to make it  easier to make a hole through the fence. OK. But in order to plan  that, it wouldnt be enough to be more intelligent than other sharks  (like these sharks are), it would be necessary to actually know the  difference between titanium and plain steel, and more important, to  know that the part of the fence above water is easier to go through.  These are facts that this films sharks couldnt know, no matter how  intelligent they are.