StartupsNov 11, 2026, 6:11 AM UTC·1 min read

Seamoretech Raises €1.1M in Seed Round to Turn Brine Into Water

Portuguese cleantech company Seamoretech has closed €1.1 million in the first close of its seed round, backed by Rypples, 7Seas Capital and Crédito Agrícola.

Desalination plant on a coastline where brine waste is processed into fresh water and recovered minerals. — Image: El Referente

Portuguese cleantech company Seamoretech has secured €1.1 million in the first close of its seed round, with participation from Rypples, 7Seas Capital and Crédito Agrícola. The company converts brine, the highly concentrated waste stream left over after desalination, into fresh water and critical raw materials.

The new funding brings the total capital raised by the company to €3 million, following earlier investments backed by lead investor Faber and by Corbites. Together, the investors bring solid positioning and expertise in the ocean tech and climate tech sectors.

Industrialisation and expansion

The fresh capital will go toward the next stage of Seamoretech's industrialisation and toward preparing its commercial expansion. That includes a planned launch in the Spanish market next year, following a collaboration to carry out a demonstration in the country. The company is also building a growing pipeline of pilot-project opportunities in several markets, including Spain and Egypt.

Seamoretech is taking its brine-to-resources technology to commercial scale, a step few European companies have reached. It comes amid rising global pressure to tackle water scarcity and an EU agenda aimed at securing domestic supply of critical raw materials.

What the technology recovers

In practice, the technology recovers purified fresh water and high-value minerals, including magnesium, calcium, copper and even lithium, from brine that industries treat as a liability and discard as waste.

"We are entering the next phase of Seamoretech with a clear ambition: to scale our technology, accelerate our market entry, produce fresh water at a lower cost and establish a European benchmark in critical raw materials recovery, while helping protect marine ecosystems," said Sofia Delgado, CEO and co-founder of Seamoretech.

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Tags:seamoretechseed roundcleantechdesalinationbrinecritical raw materials