seaweed sustainability

Seaweed is a completely sustainable future food

Seaweed doesn’t need soil.
Seaweed doesn’t need fresh water.
Seaweed doesn’t need fertiliser. 

Seaweed absorbs carbon dioxide and releases oxygen.
Seaweed is fast-growing and nutrient-dense.
Seaweed harvesting supports coastal communities.
Seaweed supports fish habitats and marine biodiversity.

What’s not to love?


Why seaweed is sustainable

Seaweed is unlike land plants

Seaweed absorbs its nutrients through fronds, rather than roots. A structure known as a ‘holdfast’ attaches the seaweed to rocks, enabling its leaf-like fronds to move in the water and gather nutrients.


Seaweed gets everything it needs from the water around it

There’s no need for fertilisers, and no pollution. Cutting leaves at the right time in the plant’s lifecycle supports speedy re-growth and provides generous yields, without extra resources.


Seaweed is as ecologically relevant as the Amazon rainforest

Kelp forests at the bottom of the ocean play an important role in removing and storing CO2 from the atmosphere. Seaweed grows at a much faster rate than land plants, which means with careful harvesting it can remove more CO2.


Seaweed harvesting provides an alternative income stream

Coastal communities dependent on fisheries can find a seasonal alternative to overused waters, which is better for the local economy and better for the environment.


Mara Seaweed and sustainability

Mara respects the ocean by hand-harvesting seaweed seasonally and sustainably from the wild, allowing crops to re-grow healthily. Where possible, we work with coastal communities to provide support for seaweed harvesting initiatives. Learn more about Mara’s ethos.