Bio-plastic made from fish scales wins U.K. James Dyson award

Bio-plastics could prove to be a suitable alternative to single-use plastics.

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Lucy Hughes with MarinaTex

  • The flexible bio-plastic, called MarinaTex, breaks down within about four to six weeks.
  • One Atlantic cod contains enough waste to produce hundreds of MarinaTex bags.
  • More than half of single-use plastics end up in the world's oceans.


Single-use plastics — among them, straws, cutlery, shopping and sandwich bags — are small, but they have a huge impact on the environment. The vast majority of these plastics end up in landfills or the ocean, where they can take hundreds or thousands of years to decompose.

And when you consider that the world consumes about 1 million plastic bottles per minute, the implications of plastics consumption are pretty staggering.

To help offset these environmental costs, University of Sussex graduate Lucy Hughes recently used fish waste to create a compostable alternative to single-use plastic. The translucent material, called MarinaTex, is made from fish scales and skin – materials that break down in food-waste bins within about four to six weeks. MarinaTex is also flexible and durable, showing a higher tensile strength than LDPE (low-density polyethylene), which is the most commonly used material in single-use plastic bags.

"This shows that the sustainable option does not sacrifice quality," said Hughes, who won this year's U.K. James Dyson Award, a prize that promotes young British designers and engineers.

Hughes conducted more than 100 experiments to devise her final design, which uses agar, a gelatinous substance found in the cell walls of red algae, as a binding agent. One Atlantic cod contains enough waste to produce 477 MarinaTex bags, according to Hughes.

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"I didn't want to use virgin natural materials so I challenged myself with starting with a waste stream," Hughes said. "For me a good design is something that bridges the gap between behaviors, business and our planet."

Hughes said many people have a disconnect about the world's oceans.

"When you see bits of rubbish in the ocean, or when you see that environment be sort of soiled by waste, it's kind of an eye-opener."

Hughes was awarded about $2,500 for winning the national contest, and she's in the running to win the international award. Last year's winners were Nicolas Orellana and Yaseen Noorani, who created the O-Wind Turbine.

Reducing waste from single-use plastics has recently become more of an environmental priority for individuals (the no-straw movement) and governments alike. In August, India announced plans to soon ban six single-use plastic products: bags, cups, plates, small bottles, straws and types of sachet. The move, which is the nation's most sweeping plastics regulation to date, is expected to reduce India's plastic consumption by 5 to 10 percent.

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