SIZE:
Up to 2 m and 230 kg for females and 3.3 m and 350 kg for males.
LIFE EXPECTANCY:
30 to 40 years.
LIFE CYCLE:
Sexual maturity is reached around three years of age, but grey seals tend to start breeding around the eighth year of life. Generally, reproduction takes place on land. Gestation lasts eight months. The onset of embryonic growth can be delayed up to four months to ensure that the timing of birth is optimal for the pup’s survival.
Females give birth to their pups, weighing between 15 and 17 kg, between early December and mid-February. The pups are called “blanchons” (whitecoats) because of their white fur and are nursed for 16 to 22 days, after which the females return to the water. Once weaned, the young seal will have almost doubled in size and will weigh around 50 kg.