A net benefit means that a development should leave biodiversity and ecosystems in a better state than before. This should ideally be provided by improving and creating habitats on site, and maintaining them in the long term.

By renewing your membership with The Wildlife Trust of South and West Wales you can continue to join a movement full of people who care about precious wildlife and wild places. From helping to look after over 100 nature reserves to campaigning for the protection of vulnerable wildlife, your money will be used right at the heart of our work.

Only a 20 minute boat trip from the mainland, Skomer is an excellent place for a daytime adventure. Bursting with seabirds including our Atlantic Puffins, Guillemots and Razorbills, this National Nature Reserve is one of Britain's most important seabird colonies. It is peaceful and wild at all times of year - there's so much to see and explore.

Please note, Puffins start arriving in mid-April. They are present from May-July. The first ones start leaving in mid-July and all Puffins are gone by the end of July. Please see our seasonal timeline below for what to see each month.