This is more common than one would think. It is not a result of the lack of other food it is more because seaweed is full of vitamins and minerals –vitamins: A, C, E, K and B and minerals: iodine, selenium, calcium and iron. Not sure how many grizzly bears have a degree in advanced nutrition but over the centuries they seem to have learned what is good for their system.
Grizzly Bear Eating Seaweed?
May 12, 2016