Last winter, the ponds in the park where marbled crayfish – a Great Lakes invasive species – were first discovered in Ontario were drained in hopes that the crayfish would freeze to death. But that didn’t happen, likely thanks to the unseasonably warm weather and their burrowing ability. Now the Invading Species Awareness Program of the Ontario Federation of Anglers and Hunters has launched a regional sweep from Ottawa to Windsor. Read the full story by Great Lakes Now.