This is a particularly sneaky snake.

Isn’t it incredible how a tangible piece of nature can transport you to a different world? On this month’s visual wildlife safari, we’ll go inside the mind of one of the world’s most famous architects with his own take on natural architecture. Gergely Dudás—better known as The Dudolf—created an intriguing optical illusion that will challenge puzzle aficionados.

This time, the challenge is for viewers to locate only one snake among a sea of turtles.

According to people who track this sort of success rate, anyone who spots the serpent in under 15 seconds will break the world record.

The herpetological “Where’s Waldo” produced by Hungarian cartoonist and illusion maven Gergely Dudás features a group of green and brown tortoises in a grassy plain, with the slitherer seemingly nowhere to be found.

It’s additionally difficult to find the snake in the grass because it has a long, green neck that resembles a turtle’s.

Fortunately, Dudás included a handy hint that reveals the sneaky snake emerging from behind a turtle shell in the lower left corner. This creature is one of two headless snakes rising up among the sea of serpents.

You can’t see it? On the other hand, if you give up, go to the bottom of this page for the reveal.

This isn’t the sort of puzzle that’s been designed to tax one’s mind to the utmost.

In another of his needle-in-a-haystack drawings, people are challenged to find the mouse in under a minute among the mushrooms.

Meanwhile, another game features brown bears in a mosh pit of coconut palms.

Optical illusions such as this are usually used as a fun way to relieve the tension of modern life, but they also have legitimate medical value for specialists. These brain games are credited with assisting researchers in understanding how the human mind works and how it responds to its environment.

We typically take perception for granted, and rarely think about the hard work that underpins everyday tasks, such as seeing a cup of coffee in front of you,” Dr. Gustav Kuhn, a psychologist and human perception expert at Goldsmiths University in London, told The Sun.