Video 1 from Plant–animal worms round themselves up in circular mills on the beach Ana B. Sendova-Franks Nigel R. Franks Alan Worley 10.6084/m9.figshare.6798980.v1 https://rs.figshare.com/articles/media/Video_1_from_Plant_animal_worms_round_themselves_up_in_circular_mills_on_the_beach/6798980 Video of circular mill number 1 on the beach near boulder D (figures 2<i>a</i>) at 2 x normal speed. 2018-07-10 14:51:11 circular mills collective motion collective behaviour