Grey Seals

"It is a large seal, with the bulls reaching 2.5–3.3 m (8.2–11 ft) long and weighing 170–310 kg (370–680 lb); the cows are much smaller, typically 1.6–2.0 m (5.2–6.6 ft) long and 100–190 kg (220–420 lb) in weight. Individuals from the western Atlantic are often much larger, with males reaching 400 kg (880 lb) and females weighing up to 250 kg (550 lb).
It is distinguished from the common seal by its straight head profile with nostrils that are well apart, and fewer spots on its body.
Bull Greys have larger noses and a more convex profile than common seal bulls.
Males are generally darker than females, with lighter patches and often scarring around the neck. Females are silver grey to brown with dark patches." http://en.wikipedia.org/wiki/Grey_seal