Gluten free. Cerulean Seas brings to you one of earth’s purest essential and minerals-salt. Cerulean Seas Sea Salt is harvested through the natural evaporation of sea water from warm and sunny oceans of California; then refined by washing the salt with clean saturated brine to remove surface impurities. Salt, a universal necessity, plays an important role in the digestion of other nutrients. Cerulean Seas – a gift of the sea.