But that drag reduction only occurs when the skin is attached to a flexible body. Human bodies, which are far less flexible, receive no benefits at all from the surface of the suit. Of course, Lauder speculates that the suit could still have speed benefits--it enhances a swimmer's posture, and its tightness could have a beneficial impact on circulation. But swim like a shark? Nope--it's going to take more than some artificial shark skin for that.