Physical Appearance
Weddell seals measure about 2.5-3.5 m (8.2-11.5 ft) long and weigh between 400–600 kg (880-1360 lbs). Male Weddell seals weigh less than female Weddell seals. So males usually weigh about 500 kg (1100 lbs) or less. Male and female Weddell seals are generally about the same size, though females can be slightly larger. However, male seals tend to have a thicker neck and a broader head and muzzle than the females. The Weddell seal face has been compared to that of a cat due to a short mouth line and similarities in the structure of the nose and whiskers. Their upturned mouths give them the appearance of smiling.
The Weddell seal grows a thin fur coat around their whole body except for small areas around the flippers. The colour and pattern of the coat varies, often fading to a duller colour as the seal ages. This coat moults around the beginning of summer. Adults are generally brown, with lighter ventral (belly) pelage. They are mottled with large darker and lighter patches, those on the belly being silvery white. Adult males usually bear scars, most of them around the genital region.
Young Weddell seals have gray pelage for the first 3 to 4 weeks; later they turn a darker color. The pups reach maturity at 3 years of age. The pups are around half the length of their mother at birth, and weigh 25 to 30 kg (55 to 66 lb). They gain around 2 kg (4.4 lb) a day, and by 6–7 weeks old they can weigh around 100 kg (220 lb).
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