Cruise liner Hurtigruten have revealed their newest endeavours to reduce their carbon footprint.
Cruises are notoriously bad for the environment, emitting sulphur oxide which damages the sea and atmosphere.
Many companies have announced plans to remove plastic straws and single-use plastic on their ships in the next decade.
Hurtigruten announced they planned to replace fuel with a rather disgusting product instead.
The cruise line will use dead fish to power their ships, a much greener method.
Known as liquefied biogas, it is made from dead fish and decomposed organic waste and will cost $ 826 million over three years to implement.
The alternative fuel will be used alongside battery packs and natural gas to run the ships and reduce their emissions.
It is hoped to be introduced to six of the 17 ships by 2021.
Hurtigruten Chief Executive Officer Daniel Skjeldam said in a statement: “Sustainability will be a key driver for the new era of shipping and the travel industry.”
He added: “While competitors are running on cheap, polluting heavy fuel oil, our ships will literally be powered by nature.
“Biogas is the greenest fuel in shipping and will be a huge advantage for the environment.”
Skjeldam urged “other cruise companies to follow” to help the environment, with his plans to eventually be fully carbon-neutral.
He has also ordered three hybrid powered cruise liners lines to be added to the fleet.
Hurtigruten’s removal of plastic earlier this year included single-use plastic lids, straws, bags and and cups.
Earlier this year, MSC Cruises pledged to remove all single-use plastic onboard the ship by 2019.
This includes cups, containers and straws which are often provided onboard the ship.
Royal Caribbean are to also remove all plastic straws onboard by 2018, with paper straws on offer instead.
P&O and Cunard will remove all single-use plastic by 2022.
