Ostrea

Ostrea is a French climate-tech startup founded in 2020, specializing in the production of a high-performance, low-carbon material made from upcycled seashells, including oyster, s

callop, and mussel shells. This innovative material is designed for sustainable architecture and design, transforming marine shell waste into a 100% recyclable, bio-mineral product that is durable, heat-resistant, UV-resistant, and abrasion-resistant. Headquartered in Thorigné-Fouillard, Brittany, Ostrea operates a 5,600 m2 factory where it designs, sources, and manufactures its products entirely in France. The company's core offering is a marine terrazzo-style material used for various applications, including flooring, countertops, furniture panels, washbasin tops, and surface coatings. Ostrea targets industries focused on sustainable architecture, interior design, and eco-friendly construction, emphasizing its commitment to the circular economy by turning shell waste into valuable resources.