While visiting Montreal’s Eco-Museum with his kids, David spotted an intriguing optical illusion at the indoor aquarium and decided to vlog the illusion for his YouTube followers.The refraction in the water of the turtle tank created an illusion where the neck of the turtle appeared detached from the body. “We went to a place in Montreal called the Eco-Museum. They have a nice indoor aquarium section, where I spotted the most amazing optical illusion of a turtle with a relatively long neck. I’m pretty sure I found it more interesting than the kids did”, David informed Storyful. Credit: Viva Frei via Storyful