Rotating Snakes – the circular snakes appear to rotate spontaneously in your peripheral vision as a result of the peripheral drift illusion. Notice how the movement stops when you look directly at a collection of concentric circles. The illusion is probably caused by unconscious rapid eye movements and blinking

Snake Conveyors is another peripheral drift illusion. Blinking may enhance the effect

Autumn Colour Swamp. Try moving your browser window rapidly up and down (or scroll) to enhance the effect

Rollers appear to rotate

Construction of a Subway by Rabbits: the inner circle seems to rotate clockwise while the outer circle rotates anti-clockwise. It helps if you don’t look straight at it

Primrose Field: the checkered background and squares appear to undulate. Moving your browser window or scrolling enhances the effect

Red Frog Eggs

Button Yokai. As you move your eyes around the picture, the buttons seem to get bigger

Irrigation. The contents of the central channel move slowly upwards

Swimming Rings appear to approach each other and move apart