(First airdate: December 9, 2020) The European green crab is considered one of the world’s worst invasive species. Emily Grason and Jeff Adams are both experts in aquatic invasive species and as marine ecologists with the UW College of the Environment and Washington Sea Grant, they oversee a comprehensive program focused on early detection, monitoring and control of the green crab. Learn more about this invasive crab and what is being done to keep the crab out of Puget Sound.

Note: The repeat episode is rescheduled to air Tuesday 12/22 at 5:30pm (preempting Bioneers that day).