Fisheries and Oceans Canada
http://www.dfo-mpo.gc.ca/seal-phoque/faq_e.htm
"Harp seals can be legally hunted once they have moulted their white coat, which occurs at about 12-14 days of age. However, they are not usually hunted until they reach the "beater" stage of development at around 25 days old. Blueback (hooded) seals moult their coat as early as 15 to 16 months of age, at which time they can be hunted. The seals hunted are self-reliant, independent animals."