The cool thing about optical illusions is that they will challenge both your eyes and brain, showing you just how sharp your perception and cognitive skills really are. They trick your brain and make you see something that does not even exist.
This new optical illusion requires participants to spot the word "seal" among a messy crowd of words spelling "zeal." You will have only five seconds to spot the odd word in this image, but do not be so confident-this simple task is actually your ultimate cognitive test of attention and pattern recognition.
