Emerald Cove Silver Grade Wakame (Dried Seaweed), 1.76 Ounce Bag

Why does the product label not mention iodine content?

This product/package description does not identify the ocean source of this seaweed. where is this harvested?

Is this good to make miso soup?

I am interested in purchasing this product. I wondered once the bag is opened how long can this last? Where should it be stored --- in refrigerator, pantrry etc? Thanks for your time - Marilyn