Within the natural world there is no family of plants known which are more protective against radiation and environmental pollutants than sea vegetables or seaweed.
Seaweed is packed with easy to absorb minerals such as calcium potassium iodine and zinc. Most importantly Iodine, which is rare in land plants, has been used as an antiseptic in surgery for centuries. Iodine is a relatively rare element in the Earth’s crust, but is concentrated in the oceans.
It is the heaviest essential element known to be needed by all living organisms, but its rarity in many soils has led to many deficiency problems in the past with land animals and in human populations.