Our paper “Proto-cooperation: group hunting sailfish improve hunting success by alternating attacks on grouping prey” was published on November 2nd, 2016 in the Proceedings of the Royal Society B. It combines unique observations in the open ocean with a generic mathematical model of the hunting process to explore cooperative benefits of group hunting in sailfish. Check out the amazing footage of sailfish hunting for sardines from the coverage of our article in the on-line news section of Science Magazine. Many thanks to all co-authors!