Consider, for example, the eye spots on the front wings of a peacock butterfly.

But even if this adaptive explanation is correct, it does not tell us how the eye spots are made.

Just below each tail is a red eye spot.

Others might have white socks and nose stripes with no eye spots or mask.

They are sturdy fish, and powerful with a distinct eye spot on the tail.

This species is known for the two "eye spots" on the inside surface of its pitchers.

The number and size of the eye spots is variable, they may be missing on the upper wing surface.

These eye spots are visible on both sides of the wing.

The larvae are close to a settlement stage when dark eye spots and a foot develop.

The body of the animal is all pure white other than its black eye spots.