Charlie Jacobsma slapped the surface of a pool enclosure at Chicago’s Shedd Aquarium and scanned the water for movement.

A s they transport us to underwater landscapes, aquariums provide a soothing experience for visitors. The dark rooms, illuminated by soft light emanating from the tanks, display a ...

Today’s optical illusion is challenging viewers to find a hidden "5" among a sea of "2s." The tricky pattern plays with human perception, making it hard to spot the odd number. Can you find it?