In the fishing ports along France’s Brittany coast, the discarded fishing nets pile up along the coastal quaysides.

The lifespan of a deep-sea net is between 12 and 24 months, after which they become worn and beyond repair. Until now, the estimated 800 tonnes of nets scrapped every year have been a problem.

Now, the horsehair netting, once used to trawl monkfish from the sea bed, is being used for another catch: Russian drones.

Russia employs small cheap drones and fits them with explosives, directing them by remote control for distances of up to 25km. The Ukrainians use the nets to create tunnels in which drone propellers become entangled. It has been compared to spiders catching flies in a web.