“Giant kelp doesn’t rely on harmful fertilizers and pesticides to grow, does not necessitate the use of arable land or fresh water and efficiently sequesters CO₂ from the ocean,” AlgiKnit CEO and co-founder Tessa Callaghan told TechCrunch.

AlgiKnit said it has raised a $13 million Series A led by Collaborative Fund, with participation from H&M CO: LAB (the investment arm of H&M Group), Starlight Ventures, Third Nature Ventures, as well as previous backers Horizons Ventures and SOSV.

The startup says its goal is to provide designers and brands with the tools and materials necessary to create a sustainable future for people and the planet.