Carbon & Climate - Ocean Startups
294 ocean startups and private companies working on carbon & climate across 49 countries.
Where are carbon & climate startups based?
Carbon & Climate 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.
Yacht Carbon Offset
Wales · Carbon/Climate, Mangroves/Coastal
Yacht Carbon Offset provides carbon offsetting services to superyacht owners, charter companies and marinas, calculating emissions from fuel use and retiring verified carbon credits. Its project portfolio combines renewable energy in developing countries with mangrove blue carbon restoration in Kenya.
Matorka
Iceland · Aquaculture/Fisheries, Carbon/Climate
Matorka is an Icelandic land-based aquaculture company producing premium Arctic char. It operates a vertically integrated production model focused on responsible seafood production and low-impact farming.
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.
Floating Solutions Consulting
Australia · Energy/Maritime, Carbon/Climate
Floating Solutions Consulting is an independent Perth-based maritime engineering and naval architecture consultancy. It supports the full marine asset lifecycle - hull integrity, marine assurance, and marine energy and decarbonisation - for the energy, defence, and commercial maritime sectors.
Ferdocean Shipping AS
Norway · Waste/Pollution, Energy/Maritime, Carbon/Climate
Ferdocean Shipping AS is a Norwegian offshore waste management company that treats oil-contaminated drill cuttings, sludge and wastewater onboard vessels. It develops integrated marine logistics and vessel-based treatment solutions to reduce emissions, environmental footprint, and handling risks in offshore operations.
Capture6
USA · Carbon/Climate, Energy/Maritime, Waste/Pollution
Capture6 is a water-positive carbon removal company that processes waste brine from desalination and wastewater facilities to recover fresh water while permanently removing atmospheric CO2. Its integrated system turns brine disposal into fresh water, carbon credits, and valuable byproducts.
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.