Werewool - Coral Fluorescent Proteins in Biodegradable Dyes — Werewool

Biological model: Scleractinian coral fluorescent proteins

Company: Werewool

Coral fluorescent proteins inspire biodegradable, vibrant coloured fibres without synthetic dyes, eliminating textile industry's water pollution.

The challenge

Textile dyeing consumes 92 trillion litres of water annually and pollutes rivers with heavy metals and azo dyes, particularly in developing economies. Conventional synthetic dyes rely on petroleum feedstocks and toxic fixatives. Sustainable, non-polluting dyeing methods are urgently needed.

Nature's strategy

Reef corals synthesise fluorescent proteins (GFP, RFP, CFP) to protect photosynthetic symbionts, achieving high colour saturation with minimal resource investment.

What was emulated

Biological pigment synthesis; light-protective protein architecture; colour stability without chemical fixatives; full biodegradability; zero-water-pollution dyeing.

The innovation

Genetically engineered bacteria that produce coral-derived fluorescent proteins, which are cultivated directly onto wool fibres, creating biodegradable, non-toxic coloured textiles.

Full case study

Reef-building corals produce fluorescent proteins (GFP, RFP) to absorb excess sunlight energy and re-emit it safely, protecting symbiotic zooxanthellae from photodamage. These proteins exhibit extraordinary colour saturation, photostability, and biological efficiency—traits the synthetic dye industry has attempted to replicate for centuries using energy-intensive chemical synthesis and toxic fixatives. Textile dyeing is the second-largest water polluter globally, accounting for 92 trillion litres of wastewater annually, contaminating rivers and groundwater with heavy metals and azo dyes. Werewool approached this by extracting and cultivating coral-derived fluorescent proteins, then genetically engineering bacteria to produce them at scale. Rather than chemically dyeing fibres, the company ferments genetically modified organisms that secrete fluorescent proteins directly onto wool fibres during cultivation. The result is Werewool—textiles with vibrant, stable colours (reds, greens, cyans) that are fully biodegradable, non-toxic, and require no water-intensive rinsing or chemical fixation. Each fibre is literally a biological composite, embedding living protein pigments. Field trials demonstrate colour fastness exceeding conventional dyes whilst eliminating wastewater entirely from the dyeing process.