i think sea weed is high in iodine correct me anyone if im wrong but i am pretty sure kelp flakes ( you can buy them dry at health food shops) arent as awfull as they sound if you put them in soup and nori that you use making nori rolls should also have iodine in it
or get sea lettuce from clean beaches and sit it near the fire to dry untill it is crispy if you keep it in an airtight container you can crumble it over food and it just tasted like salt !

... maybe im the only weird person that eats seaweed