A new gold rush is brewing in the warm waters off India’s coast. But this time the prize is not spice or silk. It is algae. And for British investors eyeing the next big thirst quencher, the timing could not be more critical.
What is being called ‘blue gold’ is a humble organism that has long been a dietary staple in parts of Asia. Now spirulina and other microalgae are being turned into protein drinks, vitamin shots and even meat substitutes. And the British appetite for these products is growing fast.
At first glance, this is a classic story of global capital seeking cheap production and high returns. India’s low labour costs and tropical climate make it an ideal hub for algae farming. But the real driving force is climate change. Traditional agriculture uses vast amounts of land and water. Algae can be grown in tanks or saltwater ponds, using much less resources. As the world scrambles to feed nine billion people without wrecking the planet, algae looks like a miracle crop.
Yet for the workers at the bottom of this supply chain, the miracle can feel more like a mirage. I travelled to Tamil Nadu, where a dozen British-backed farms have sprung up along the coast. The workers, mostly women from nearby villages, wade into waist-deep ponds to harvest the slimy green mats by hand. They earn about 150 rupees a day – less than £1.50. The owners are British venture capitalists who plan to sell the processed powder to health food chains in London and New York for a hefty mark-up.
One worker, Sunita, told me she cannot afford the very product she helps produce. “They say it is good for health. But my children eat rice and dal. We cannot buy these things.” She has been harvesting spirulina for three years. Her hands are stained green. Her nails are broken. She earns too little to save. But she needs the work.
The question of fair wages haunts the algae boom. The industry is still young and largely unregulated. There are no global standards for labour conditions or environmental impact. Some farms harvest as much as they can without proper rotation, risking long-term damage to the coastal ecosystem. Meanwhile, the British investors I spoke to insisted they are “building a sustainable supply chain” and paying “local market rates”. When pressed on wages, one said: “If we pay more, we can’t compete with Chinese producers. The margins are thin.”
Union leaders in Chennai are watching closely. They have seen this story before. From textiles to tea, India has long supplied the world’s luxury goods while its own people go without. “The algae must not become another story of exploitation,” said K. S. Ramesh, a union organiser. “We welcome investment. But the workers must get a living wage. Not a starvation wage.”
There is no denying the potential. Algae drinks could be part of a greener diet. They use less water than almonds or dairy. They do not require deforestation. They are nutritious. But the human cost cannot be ignored. If the British investors truly believe in sustainability, they must also sustain the women who stoop in the ponds. Otherwise, the blue gold will leave a bitter taste.
In the end, the price of a bottle of algae drink in a London supermarket should also reflect the hands that made it. If it does not, the algae industry risks repeating the same old inequalities on a new, green frontier. The world is watching. And for the workers of Tamil Nadu, time is running out.
