811 ocean startups and private companies working on waste & pollution across 74 countries.
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.
Ireland · Energy/Maritime, Waste/Pollution
XFuel is an Irish cleantech company that converts waste hydrocarbon liquids, including marine waste oils, into low-carbon drop-in transport fuels. Its proprietary Chemical Liquid Refining technology targets shipping and other hard-to-decarbonise sectors.
USA · Aquaculture/Fisheries, Waste/Pollution, Energy/Maritime, Carbon/Climate, Data/Tech, Education/Policy, Generalist
Cargill is a global food and agriculture company that supplies food, ingredients, agricultural solutions and industrial products. It works across global supply chains with farmers, food producers and customers, and advances sustainability, climate, water and community initiatives.
New Zealand · Waste/Pollution
The Better Packaging Co. is a New Zealand-based sustainable packaging company that makes e-commerce packaging from certified ocean-bound plastic and compostable materials. Its flagship POLLAST!C range turns plastic pollution rescued from Southeast Asian coastal communities into mailers and poly bags.
South Africa · Waste/Pollution, Data/Tech, Generalist
GreenWay Africa is a South African sustainability consultancy providing waste management, circular economy, smart water, and engineering services to organizations entering the blue and green economy. It combines ESG advisory, proprietary digital platforms (Tsela), and community programs that formalize informal waste reclaimers.
USA · Data/Tech, Aquaculture/Fisheries, Waste/Pollution
Astraeus Ocean Systems is a US ocean-data startup that measures on-water conditions and delivers hyperlocal forecasts via in-water sensors and autonomous surface vessels. It serves shellfish/aquaculture farms, fisheries, ports, public-health agencies and marine researchers with role-ready operational cues.
USA · Waste/Pollution
ecoSPEARS develops NASA-invented green chemistry technologies to eliminate persistent toxins and forever chemicals (PFAS, PCBs, dioxins) from contaminated soil, sediment, and water.
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.