AeroSHARK thin film reduces drag on airplanes

https://techxplore.com/news/2022-02-aeroshark-thin-airplanes.html

"shark skin is covered with millions of riblets, which are protrusions that run the length of their bodies... result was the creation of AeroSHARK, a clear, thin skin with millions of riblets, each just 50 micrometers high. Testing showed that the material reduces drag... reduce fuel consumption by 1.1%... reductions in fuel consumption across its fleet by 4,800 metric tons a year... equivalent to 87 long-haul flights from Zurich to Mumbai. Swiss plans to coat all 12 of its 777-300ER airplanes"