Colin Stafford-Johnson explores the wildlife and ancient ruins of the Skellig Rocks, the deserted Blasket Islands, Ireland's highest mountain range and the inlet of Clew Bay.

Colin Stafford-Johnson begins his Atlantic journey exploring the ancient ruins and wildlife of the Skellig Rocks - stormbound ocean pinnacles off the south western corner of Ireland, where early Christian monks built a monastery on the summit almost 1,500 years ago.

His next stop is the deserted Blasket Islands, home to vast numbers of seals coming ashore in winter to fight, mate and moult, before he heads inland through Ireland's highest mountain range in search of the island's last surviving herd of red deer from prehistoric times.

Back on the coast, he goes on the trail of humpback whales, which are making their mark in Irish waters and returning year after year in increasing numbers, before heading north along the coast to meet Ireland's only toads and lizards, and a dolphin who has set up residence off Ireland's limestone desert region - the Burren.

His journey ends in Clew Bay, an iconic inlet halfway up Ireland's west coast and the place Colin chose to make his home.