live in fresh water to might they pose a threat to our ecosystems. a small lake near the bavarian city of english that. biologists cattle and shuttle and boat on pull garri are on the hunt for freshwater jellyfish. munich university we want to closely examine jellyfish ecology and plan to conduct experiments at the institute i mean to do that we need to collect some specimens while. the two researchers have been waiting for weeks for a bigger shoals to appear in the very end lakes and ponds will they find any today . freshwater jellyfish were first discovered in europe in eighteen eighteen in the water lily pond in london they were an invasive species native to china that probably hitched