A Canadian government study in 1994 calculated that each year 4.5 million harp seals eat 140,000 tons of cod, or 2 billion fish.
The harp seal has a black face with silvery-gray body.
Many harp seals are able to live up to 30 years in the wild.
When harp seals migrated along the shore in spring, the net 'box' trapped them.
This was due to the changing food resources for harp seals.
The harp seals, indigenous to Arctic waters, are silvery with black heads and can grow up to six feet.
In March, the annual seal hunt (of the harp seal) takes place.
In the center of the magazine, a harp seal looks the reader right in the eye.
It may be, but in 2006, 330 000 harp seals were killed and 95% of those were under three months old.
One species that has experienced some problems is the harp seal, primarily because it is very far from its Arctic home.
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