Some adult flat fish have both their eyes on one side of the head.

Though they start their lives with eyes symmetrically placed,

one eye moves over the top of the head to the other side as they grow.

The two-eyed-side (usually the right side) develops strong camouflage

coloring to suit the background, the other side remains white.

The reason for this lopsided growth is that flatfish spend

most of their adult lives lying on one side at the bottom

merging well with the background.

nly the eyes protrude while they lie in wait for the next meal.