Grey Seal With Weaned Seal Pup

Grey Seals are one out of two seal subspecies, which are native to the UK. This seal subspecies is born in a white non-waterproof fur coat, and will moult into the first adult fur coat after mum leaves them (when they will be 17-23 days of age).
I have however occasionally seen weaned seal pups still being with their mums. This may be due to the mum finding food sources while she nurses the pup.