It 's also frequented in the early portion of the breeding season by seabirds .
A polynya forms in Cardigan Strait most winters , used by wintering Bearded and Ringed seals , polar bears , and walrus .
Cardigan Strait 's also frequented in the early portion of the breeding season by seabirds .
A polynya forms in Cardigan Strait most winters , used by wintering Bearded and Ringed seals , polar bears , and walrus .