Korea faces significant environmental and economic challenges from marine pest species such as starfish and sea urchins, which damage coastal ecosystems and fisheries. Traditionally, local governments have purchased and disposed of these pests to control their population. However, a new policy direction recognizes their potential as industrial resources, particularly for functional textiles. The startup Coolbears has developed a method to extract calcium carbonate from these species and incorporate it into fibers, resulting in durable, sweat- and salt-resistant clothing.
The primary beneficiaries of this innovation are public sector workers, including military, maritime police, and firefighters, who require robust uniforms exposed to sweat and saltwater. The new textile materials offer 20–30% greater durability compared to conventional fabrics, reducing replacement cycles and associated costs. The environmental impact is also significant, as the process converts marine waste into valuable resources and reduces carbon emissions from textile disposal. Coolbears has previously worked with recycled plastics and fishing nets, furthering its commitment to sustainable materials.
Development of the calcium carbonate textile technology took approximately three years, involving extensive experimentation and the use of three tons of marine pests. Coolbears received support from startup programs and the Ministry of Oceans and Fisheries’ R&D initiatives. In 2025, the company earned the New Excellent Technology (NET) certification, which officially recognizes innovative technologies in Korea’s marine sector. With certification secured, Coolbears is now preparing to launch production and expand its product range to include functional T-shirts, work uniforms, and underwear.
Frequently asked questions include how the textiles are made and their environmental benefits. The process involves finely grinding calcium carbonate extracted from starfish and sea urchin shells and integrating it into fibers during manufacturing. Testing shows a 20–30% increase in durability, and internal analysis estimates a reduction of approximately 370,000 KRW in environmental costs per 100 shirts. Coolbears delayed sales to meet certification requirements but is now ready for commercial rollout. The company also participates in environmental donation programs and continues to develop new sustainable materials.
Korea’s policy to transform marine pest species into functional textile materials is a notable example of environmental and industrial synergy. The NET certification and public sector adoption provide strong incentives for innovation, while Coolbears’ technology delivers both ecological and economic benefits. The durability improvements and environmental cost savings are grounded in extensive testing and analysis. Continued development of sustainable materials and participation in environmental donation programs reinforce the positive impact of this initiative.