Iolo Williams recalls the best Springwatch stories of the Welsh coast. He begins with an ancient sunken forest on Borth beach, then on to characterful puffins on Skomer Island, where grey seals also come ashore to moult. Gillian Burke visits a sand dune city on the Llyn peninsula that is also home to sand martins and rare mining bees.

Iolo watches the night-time antics of starlings roosting under Aberystwyth pier and sees how their evening is thrown into chaos by a visiting barn owl. Chris Packham reveals the dramatic rutting behaviour of feral goats on the cliffs of the Great Orme above Llandudno.