Donna Nook National Nature Reserve covers more than 10 km (6.25 miles) of coastline of beach, sand dunes, inter-tidal areas, saltmarsh and open lagoons. The reserve is rich in bird life including many breeding species as well as more uncommon passage migrants and rarities; over 250 species have been recorded. However, it is for the population of grey seals that it has become famous.

For much of the year, grey seals are at sea or hauled out on distant sandbanks but every November and December, the seals give birth to their pups near the sand dunes: a wildlife spectacle which attracts visitors from across the UK. A viewing area at the foot of the sand dunes reduces disturbance to the seals and ensures the safety of visitors.

For your own safety and to reduce disturbance to the seals, visitors are asked to follow these guidelines:

Facilities are limited; there is a small car park at Stonebridge (maintained by the local authority). A private operator provides an overflow parking area; there are no public toilets in the car park; the nearest public toilets are in North Somercotes village; no parking overnight; a catering van (private) operates through the season selling hot drinks and food.