Bionic research on fish scales for drag reduction | Semantic Scholar

This paper concentrates on reduction of drag due to friction in the boundary layer close to the body surface for fast, pelagic, predatory fish species and the surface structure of the sword of a swordfish is shown to be both rough and porous.

The attachment pads of the great green bush cricket are evolutionarily optimized frictional devices that are adapted to attach the insect to a variety of natural surfaces that have a perfect combination of surface structure, lubrication and active interface control.