Bio-inspired drag reduction surface from sharkskin

Nature evolution provides nature surface treasures with special and fascinating surface function to inspire design, such as the drag reduction of sharkskin. In this overview, the morphology and mechanism of the sharkskin explained from different aspects, and various methods of fabricating surfaces with sharkskin morphology are illustrated in details, and then the applications in different fluid engineering are demonstrated in brief. This overview will improve the comprehension of the morphology and mechanisms of sharkskin, and methods of fabricating the surface with morphology, and the recent applications in engineering.