Cuttlefish Have W-Shaped Pupils – And Can Camouflage Without Seeing Color
In clear, shallow water, a cuttlefish can seem to dissolve into sand and shadow – then reappear like a plot twist. The paradox that drives researchers is simple and maddening: these animals match their surroundings with uncanny precision, yet their eyes are mostly insensitive to color. How does a creature that can’t see the rainbow ...
