The arrival heralded the start of a breeding season which will last until mid January, according to Alex Green, spokesman for the National Trust reserve at Blakeney.

The white pup was spotted on the remote north Norfolk spit by rangers out doing conservation work.

Thousands of visitors make the trip to see the pups at Blakeney every winter.

'It's an extremely busy time for the team at Blakeney, lots of hard work but it's definitely rewarding and we're looking forward to sharing this nature 'wow' with the public,' saidSabrina Fenn, National Trust seal ranger at Blakeney. ,'The pups are born with beautiful white fur coats and large black eyes making them a very cute sight indeed.

'They are fed on their mother's milk for three weeks before heading into the sea for the first time.

'Bull seals fight for territories with mating taking place soon after pupping, making it quite a dramatic place to be.'

Disturbance is a problem for the seals and can lead to mothers abandoning them, or crushing the pups to death and so the trust has produced a leaflet giving information about viewing them safely, and advice on what to do if anyone encounters an injured seal.

The recommended way to see the seal pups is by boat from Morston Quay.

Anyone prepared to walk the six miles of shingle to the point is asked not to take dogs with them, or to keep them on a short lead at all times.

The pupping area is fenced off with no access for visitors giving the seals space to give birth and to raise their pups. Visitors are urged not to try to take their photo with any seals as mothers are protective and males very territorial.

To keep up to date with the seal births visit www.nationaltrust.org.uk/blakeney