It was a subtle shift, an undercurrent of cool energy that brushed by him, like when Sofi used her voodoo fortune-telling powers around him.
The sinkingdown occurs in the Kattegat when the inflowing Atlantic water enters the Baltic as an undercurrent which is both warmer and denser than that on the surface.
The inflowing Baltic undercurrent carries with it herrings and other fish from the North Sea outside, and the submarine current entering the Barents Sea also carries with it such fish as plaice.
Hence a strong surface current sets inwards through the Straits of Bab-el-Mandeb and Gibraltar, while an undercurrent flows outwards, raising the temperature and salinity of the ocean for a long distance beyond the straits.
And yet, there is all through an undercurrent which runs hard against his surface verdicts, and here and there comes to expression.
The Undercurrent of Modern Realism.
The "North Sea" water, of 34 to 35 pro male salinity, does not appear at the surface in the Skagerrak, except as a strip along part of the coast of Jutland, but it is always found as an undercurrent overlying the oceanic water.