The global seaweed harvest is worth more than all the world's lemons and limes. Seaweed farming is booming: The global harvest has doubled in the past decade, according to a new report from the United Nations University, and it's now worth more than all the world's lemons and limes. Most of that seaweed ends up in our food, though there is a growing market in seaweed-based cosmetics and drugs.
Seaweed kelp is a marine vegetable, and it has been an important food, fuel, and fertilizer since ancient times. It’s heavy on nutrition, light on empty calories, and it comes with many superfood benefits. Let me list some of those benefits so you can see the huge amount of nutrition that can be gained from humble seaweed.

Good source of iodine (our body doesn’t produce iodine but we need it in order to make thyroid hormones.)
It has antioxidant, antifungal, and anti-inflammatory properties
It is useful for regulating estrogen
It contains vitamins A, C, and all the B’s
It contains calcium, magnesium, iron, fiber, amino acids, and good fats

So you can see why many are calling seaweed kelp a superfood, and predicting that kelp is the new kale. But it’s not only important for the nutrition it contains, but also for how is works to improve our health.

Studies have shown that it may help to improve digestion and reduce fat absorption.
Other studies suggest that it has anticancer, antiviral, and anticoagulant properties.

Seaweed is fairly easy to farm, and is super-sustainable. It grows quickly, as much as 5-10 inches a day. It doesn’t consume any of the ocean’s natural resources as it grows, doesn’t need any pesticides of fertilizer, and is easily harvested.