Copyright Akiyoshi Kitaoka 2010 (July 11)
"Octopuses at night"
Horizontally aligned rows of half circles appear to tilt counterclockwise, clockwise, counterclockwise, clockwise
Eclectic Perambulations in the Noosphere
"Octopuses at night"
Horizontally aligned rows of half circles appear to tilt counterclockwise, clockwise, counterclockwise, clockwise