sea spray; spray of sea water
Refers to the mist or fine droplets thrown up by breaking waves, often seen along rocky coasts or in stormy weather.
岩場に打ち寄せる波が潮煙を上げていた。
The waves crashing against the rocks were throwing up sea spray.
Compound of 潮 (tide, seawater) and 煙 (smoke), describing sea spray that resembles smoke.