Meet the blind seal which somehow thrives without vision

Survival in the freezing cold Sea of Japan is difficult for most marine mammals but this seal manages to get by even though she's blind.

The spotted, or larga seal, appears to suffer from cataracts with severe clouding visible in both eyes and yet she's otherwise healthy and not especially skinny, suggesting she has no problem finding food.

How she manages to hunt and forage without the use of her eyes is a mystery.

The remarkable clip was filmed in the Far Eastern Marine Reserve of Russia last year.