Wave your serene swim goodbye. Though there were only six fatal shark encounters in 2015, the 98 unprovoked attacks broke the previous global high set back in 2000. George Burgess, who tracks the numbers in the International Shark Attack File, isn’t alarmed — it’s just that more people are taking to the ocean for recreational swimming. Recovering shark populations and warming waters may also be factors. Yet even as the likelihood of getting nipped remains statistically rare, it’s cold comfort for those convinced Jaws is just under the surface.