For the first time since we left Longyearbyen, awoke to heavy fog and the ship moving very slowly as it threaded its way among ice floes. We had been scheduled to stay aboard this morning while the ship reached the southern edge of the Arctic pack ice, which is starting push down at the end of summer. We were to have worked our way to the most northerly point in the voyage, slightly north of 80 degrees, while we tried to enter the strait between Spitsbergen and the large island to its east. The expedition staff during this time had gone out in a couple of zodiacs to scout for sightings of polar bear or anything else that they could find that would be interesting for us to see. The belief was that this was highly unlikely since the fog had formed a cloud cover about 10 metres above sea level and we sailed in a world in which visibility was limited to a clear circle at sea level but was solid fog as soon as you climbed to the higher decks in the ship....