around the coasts. Notably large colonies are at Donna Nook, the Farne
Islands, Orkney and North Rona, Lambay Island and Ramsey Island
In the German Bight, colonies exist off the islands of Sylt and Amrum and on Heligoland.
A wide variety of fish, but will eat whatever is available, including octopus and lobster.
Bulls reach 2.5–3.3 m long and weigh from 170–310 kg ; the
cows are much smaller, typically 1.6–2.0 m long and 100–190
kg in weight. Pups are born at around a mass of 14 kg. They are born in
the Autumn (September to November) in the west, with a dense, soft
silky white fur; at first small, they
rapidly fatten up on their mothers' extremely fat-rich milk. The milk
can consist of up to 60% fat. Within a month or so they shed the pup
fur, grow dense waterproof adult fur, and leave for the sea to learn to
fish for themselves.