From the shore Bass Rock looks like an iceberg floating in the sea but it is, in fact, a volcanic plug of carboniferous rock. Its colour comes from the guano and the thousands of gannets who live there and have done so for centuries. David Attenborough has described it as one of the twelve wildlife wonders of the world. Storm Francis had just passed by when we visited at the end of August, so the ride out in the catamaran and the smell induced more than a little queasiness, but I did manage a few shots. These were the best of them. The hundreds of gannets circling above us were a wonderful sight and we were pleased to be there amongst them and that the boat was able to sail, on that, our last day there.