On Celtic Tides : A sea kayak battles the freezing Irish waters as the morning sun rises out of the countryside. On the western horizon is the pinnacle of Skellig Michael - seven hundred feet of vertical rock rising out of exploding seas. Somewhere on the isolated island are sixth-century monastic ruins where the light of civilization was kept burning during the Dark Ages by early Christian Irish monks. Puffins surface a few yards from the boat as hundreds of gannets wheel overhead on six-foot wingspans. The ocean rises violently and tosses paddler and boat as if they were discarded flotsam. This is just one day of Chris Duff's incredible three-month journey.