Seaweeds & Algae - Ocean Startups
544 ocean startups and private companies working on seaweeds & algae across 54 countries.
Where are seaweeds & algae startups based?
Seaweeds & Algae Startups
Greenskill Environmental Technology Ltd
Scotland · Seaweeds/Algae, Waste/Pollution, Carbon/Climate, Data/Tech
Greenskill Environmental Technology Ltd develops microalgae-based photobioreactor technologies for carbon capture, wastewater treatment, and the conversion of emissions and wastewater into valuable products. The company combines biological process engineering, renewable energy integration, and cloud-based control systems to deliver carbon-negative industrial solutions.
Seamore
Netherlands · Seaweeds/Algae
Seamore is a food company that turns seaweed into everyday foods such as pasta, wraps, chips, and bacon alternatives. It develops consumer products that position sea vegetables as a healthy and sustainable ingredient.
Big Kelp Ltd.
England · Biotech/Biomaterials, Carbon/Climate, Seaweeds/Algae, Waste/Pollution
Big Kelp Ltd. develops kelp-based solutions to address climate change, ocean health, plastic waste, pollution, and livestock methane emissions. It focuses on large-scale kelp cultivation and kelp-derived raw materials and supplements.
Arborea
England · Seaweeds/Algae, Biotech/Biomaterials
Arborea is a private company developing microalgae-based ingredients and proteins using its Biosolar Leaf™ cultivation system. It captures CO2 and sunlight to produce net-zero food, feed, cosmetic and agricultural ingredients without fertile land.
Porto Muinos
Spain · Seaweeds/Algae
Porto Muinos is a Spanish family-run company producing seaweed, agar agar, and other sea-based food products. It develops organic dried seaweed and specialty marine foods with a Galician and Atlantic focus.
SeaMeGro
Ireland · Seaweeds/Algae, Carbon/Climate, Biotech/Biomaterials
SeaMeGro develops seaweed-based biofertilizers and microbial agricultural inputs that improve soil health, crop productivity, water quality, and carbon outcomes. It uses sustainably harvested seaweed and biological formulations to replace synthetic fertilizers and pesticides.
RubisCO2
Mexico · Seaweeds/Algae, Carbon/Climate
RubisCO2 develops modular pyrolysis technology that converts sargassum and algae waste into biochar for carbon dioxide removal. It works with Caribbean communities to turn invasive algae into climate-focused products and future carbon credits.
Eco Cascade
Scotland · Seaweeds/Algae, Data/Tech
ECO CASCADE CIC provides primary seaweed processing services for seaweed farmers in Scotland. It operates food-safe processing facilities, traceability services, research activities, and industry network-building to support the growth of the Scottish seaweed sector.