There is no smoke on the water but instead a pretty line and some nice reflected colours on the wet sand left by the ocean as she pounds the glacier ice chunks that rest on the black, volcanic sand.
This was on a Winter workshop Feb 2016.
Canon 5D3 Canon Ef 24mm f/1.4 L (6 stop ND filter – B&W)
AV mode to prioritise the aperture which I set at f/9 to attempt to include the whole chunk in the DOF. At iso200 and +2 compensation, this gave me 3.2 seconds of exposure, long enough for some magic cloth and short enough to preserve the wave trail.