Joe Crowley and Anita Rani continue Countryfile's Wild Britain initiative, galvanising the nation into helping our beloved wildlife. This week, they're exploring how communities are supporting nature on the wild island of Anglesey, off north west Wales. Joe takes to the seas looking for rare Risso's dolphins and finds out how a citizen science project is monitoring marine life around the UK's coast. Joe also visits a community woodland to learn about the ongoing challenges facing red squirrels and meets the volunteers looking out for them. Anita catches up with the people championing choughs on Anglesey, and we visit the island's only hedgehog hospital. Adam is in Cornwall seeing how a change in farming practices has increased the population of dung beetles on one farm.