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.
According to study website Jargan Josh which shared the image, those with a high IQ can spot all errors in 13 seconds or less. At a glance, nothing seems to be out of the ordinary, but this is where you need to focus as the mistakes are heavily concealed among the underwater landscape.
If you think you've got the brains to solve it in record time, then get comfy, set a timer and get started. The answer is revealed below, so try not to peak.
If you can't spot all the mistakes within the allotted time, don't worry too much. Take your time and see if you can find them.
There are four mistakes hidden within the picture – and not all of them are obvious. Scroll below to reveal the answers - but consider this a spoiler warning.
Firstly, the female scuba diver has a bottle instead of a breathing cylinder on her back.
The second mistake is that the dolphin has only one fin. Number three – the word SOS has been written in the sand under water, which wouldn't be possible.
Lastly, there's also a butterfly under the sea, which is located in the top right hand corner with the fishes.
If that puzzle was too easy for you, why not give some others a try? One challenges you to spot hidden word in just 18 seconds.
Or why not see how long it takes you to find the odd letter in this sea of Ms? If you do it faster than 11 seconds, you apparently have a high IQ.
Another letter-based brain teaser challenges you to find six odd letters in a sequence, but you must spot them all in 13 seconds.
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