I thought nothing. The surface of my mind was perfectly still. But under the surface there was a shifting and a stirring. I felt the great swell of the undercurrent. For years a wreck had sat in the depths, a rusting vessel with its cargo of bones. Now it shifted. I had disturbed it, and it created a turbulence that lifted clouds of sand from the seabed, motes of grit swirling wildly in the dark disturbed water.