Optical Illusion Vision Test: Only People with Sharp Eyes Can Spot the Odd Crab in 5 Secs
by J Nandhini
Updated Jul 02, 2025

Optical Illusion Vision Test: Can You Spot the Odd Crab in 5 Seconds?
Ready to challenge your eyes and brain? Here’s a quick and fun optical illusion that will test just how sharp your vision really is!
The challenge is simple:
You have 5 seconds to find the odd crab in this sea of cheerful red crustaceans. Most of them look identical at first glance—but one is slightly different. Can you spot it? Set a timer and try now!
Why This Works
Optical illusions like these play with our perception and visual attention. When we look at repeating patterns, our brain tends to generalize what it sees. This makes small differences harder to notice unless you have an eye for detail.
The Solution:
If you’re still searching or want to confirm your answer, look no further. The odd crab is located 5th row from the top, 6th column from the left.
Unlike the other crabs, this one doesn’t have a smile it has a straight mouth. All the other crabs are smiling happily!
You can see it clearly circled in the image below:
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