Anita Rani and Sean Fletcher explore the beautiful south west corner of Wales as they celebrate the seventieth anniversary of the Pembrokeshire Coast National Park. Anita faces her fears as she abseils one hundred feet down a sea cliff to discover how best to protect the nesting spots of the thousands of sea birds that flock here. Sean meets the artist behind the coveted annual fish licence and heads to Angel Bay to discover how to farm oysters. Adam’s Exmoor ponies are in for a treat when a farrier gives them a pedicure and they meet a new stallion. And in a special investigation, BBC News’s rural affairs correspondent Claire Marshall meets the farmers with Parkinson’s Disease who fear their condition could be linked to years of using a toxic herbicide.

Fishing is one of the most popular outdoor pursuits in the UK, with three million anglers casting their lines each year. The UK’s coastlines and rivers offer incredible fishing opportunities, from bass swimming in our seas to trout meandering through our rivers. Some fish, however, are trickier to catch than others.

Joe Crowley visits the Dorset coast to team up with a local fly fisherman as he takes on one of the UK’s most difficult fish to catch – the mullet. Joe learns about a very specific method, using unique flies created to hopefully entice one in. Along the way, we trawl the Countryfile archives in search of stories about our relationship with the fish that call our rivers and seas home.