A clean net is environmental protection in practice
Remora cleans net without noise, avoiding disturbance and disease risk for the fish, no contamination risk from work vessels and cleaning equipment coming from other locations, less use of copper and chemicals, pharmaceuticals, plastics and nylon, and significantly less carbon emissions per cage per year.
Besides a significant environmental gain, Remora undoubtedly also provides a reputational gain. Consumers are increasingly directing their purchases to sustainably produced food. Improving health, environment and climate will certainly attract more customers.
The use of gentle, electrified robotic cleaner saves the environment significant carbon emissions. There are no reliable figures here, but an estimate has been made of 2800 kw/h of renewable power per year, which will reduce CO2emissionsby about 22 tonnes per cage compared to high pressure washing.
Other calculations estimate that power consumption will be 2-3% compared to traditional operations and indicate a reduction in emissions of up to 30 tonnes per cage.
With Remora, the need for copper coating of the net is eliminated. Increased equipment life and fewer net replacements provide savings in itself. It is estimated that around 30% of copper is worn off the net and spread in the sea at the first time of high pressure washing.
Throughout the life of a net, an estimated 80-90% of copper is lost to the sea. This corresponds to about 640 kilograms of copper (Source: Bellona.no). Senior researchers Nina Blöcher (NTNU) and Oliver Floerl (Cawthron Institute) estimate in Towards cost-effective biofouling management in salmon aquaculture; a strategic outlook emissions in Norwegian waters alone at about 1000 tons annually.
The use of copper, chemicals and pharmaceuticals in the nets can cause damage to plant life and sensitive species, and cause harmful long-term effects on the aquatic environment, and in larger concentrations also for humans. With Remora as an alternative to cleaning nets, the farmer is taking a significant step toward a more sustainable production, free from allegations of harmful environmental practices.