Only eagle-eyed viewers will be able to pick out the red skis on this crowded beach optical illusion in 15 seconds or less.

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Designed by an unknown artist, this sunny image has been boggling viewers for years.

Dozens of red-and-white striped chairs are packed on the beach, back to back, interspersed with the occasional red-and-white umbrella.

Looking even closer will reveal several tiny crabs crawling around the sand and even a pair of dolphins jumping in the background.

But can you see a small pair of red skis?

If you spotted them in 15 seconds or less, you might have 20/20 vision.

Long, thin, and red — just like one of the chair’s stripes — the skis blend in perfectly with their surroundings.

SECRET SUMMER SKIS

If you’re having trouble, try seeking out the boldest stripes to start.

If you are looking at the bottom right corner of the image, you are getting warmer.

Zoom into the big umbrella, and look at just a few chairs in front of it.

Can you see the two skis sticking up?

You’ve found your sand skis.

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Ready to try your hand at more brain teasers? Keep reading.

ONE ANT IN A MILLION BUTTERFLIES

An infuriating new brainteaser is challenging the web to spot the ant hidden in this sea of butterflies.

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While the challenge might sound simple enough the ant looks very similar to the bodies of the butterfly making him nearly impossible to spot.

The puzzle was devised by Hungarian cartoonist Gergely Dudás, who is better known as Dudolf, who is famed for his mind-boggling seek and find puzzles.

He shared this one on Facebook where he boasts over 168,000 followers many of whom were left positively baffled by the conundrum.

Commenting on the post, one wrote: “Found it..this one was challenging.. The continuous black and white threw me off!”

Eagle-eyed players should be able to spot the little devil in the upper right-hand corner.

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SEVEN LITTLE CHANGES

Can you spot seven differences between these almost identical illustrations?

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Many people have been left baffled after initially thinking they were on a roll when they found the first few differences.

The watermelon likely stands out as it’s unusual to see the fruit without its black seeds.

But the other unexpected differences are infuriating to find.

You may be a genius if you can solve the challenge in 35 seconds or less.

Do you think you’ve finally found all seven differences?

Let’s find out.

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You might just have a high IQ if you can spot the second animal in the image in less than 10 seconds.

This latest brainteaser provides a real test for your observation skills as you race against the clock.

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In the image, observers can see a bird standing on a branch with a block of cheese in its mouth.

But many will look past the fact that there is a second creature that even eagle-eyed puzzle players may fail to find.

Have you found it yet?

Don’t worry if you flunked this one, we’ve highlighted the second elusive beast below.

A person with great vision should be able to fix their gaze on a cunning fox which forms the lower half of the bird’s body.

If you still can’t find the cheeky fox, here’s the secret.

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