The next time you dip your toes into a lake in British Columbia, you might want to take a closer look at the water. That's because an invasive species of jellyfish believed to be native to southeast China, Craspedacusta sowerbii, is making a new home for itself in B.C.'s freshwaters. "We know they are there. We know they are potentially widespread. But before we go a step further, we need to know what they do and then we can talk about that," said Florian Lüskow, a University of British Columbia PhD candidate and researcher.