Meet Herbert the turbot

 "A turbot flatfish has a whole new outlook on life as it has developed with its head back to front.

Normally the right eye of a turbot gradually moves round next to the left, meaning they swim on their side.

But the eyes of one turbot, called Herbert, have moved the opposite way and so he swims on his left side - and the wrong direction to all the other flatfish."
via Mail Online / more