Vortex shedding. Friction between the water and the object. The water layer closest to the lure wants to stick to it. It slides off the lure in alternating swirls which cause the lure to wobble.
https://www.google.com/search?q=vortex+shedding+video&rlz=1CDGOYI_enUS980US980&hl=en-US&prmd=visn&source=lnms&tbm=vid&sa=X&ved=2ahUKEwjh8Mjuu9H3AhW3TDABHRRLCjMQ_AUoAXoECAIQAQ&biw=414&bih=724&dpr=3#fpstate=ive&vld=cid:2b43c224,vid:_Hbbkd2d3H8,st:0
Latest Answers