In a large bowl, cover the salted salmon with water and soak overnight. Drain and rinse the salmon.
In a large bowl add the diced salmon, tomatoes, onion, and green onion, and mix well. Add sea salt, to taste. Chill and just before serving add the crushed ice.
Chef's Note: if unsalted salmon is used, rub the salmon with sea salt or rock salt and let stand overnight, then use in the recipe.