Seaweeds & Algae — Ocean Startups
426 ocean startups and private companies working on seaweeds & algae across 47 countries.
Where are seaweeds & algae startups based?
Seaweeds & Algae Startups
Greenskill Environmental Technology Ltd
Scotland · Seaweeds/Algae, Biosolutions, 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.
Oceanium
· Seaweeds/Algae, Generalist, Communities/Tourism, Carbon/Climate
OCEANIUM is a private company developing functional seaweed ingredients and materials for food, health, skincare, and ink applications. It uses proprietary biorefinery technology to turn sustainably sourced seaweed into products designed to support people health and ocean health.
Bromalgae S.L.
Spain · Seaweeds/Algae, Biosolutions, Waste/Pollution, Carbon/Climate, Energy/Maritime
Bromalgae S.L. is a biotechnology company that develops microalgae-based solutions for pollutant gas reduction and industrial microalgae production. It designs photobioreactors, provides scale-up services, and develops environmental applications such as air purification, CO2 capture, and biomass valorization.
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.
United Kingdom · Seaweeds/Algae, Carbon/Climate, Waste/Pollution, Biosolutions, Aquaculture/Fisheries
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
United Kingdom · Seaweeds/Algae, Carbon/Climate, Biosolutions
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, Biosolutions, Carbon/Climate
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.