The weekend means many will be waking up with foggy heads - and this brain teaser will help kick start any groggy brain.
Puzzles are not only entertaining, they also help keep our cognitive skills sharp - like memory, focus and concentration. Studies have shown that regularly keeping our mind active with problem solving may help ward off degenerative brain conditions like dementia.
The latest will really put your skills to the test, as takers' must spot four hidden mistakes among a pair of scuba divers deep in the ocean. Both are surrounded by fish - and even a dolphin, the Mirror reports.
