Green crab discoveries in Ketchikan show the invasive threat is spreading in Alaska

Green crab discoveries in Ketchikan show the invasive threat is spreading in Alaska

The European green crab, as pictured here, is an invasive species that threatens native fish populations. The invasive crabs were first discovered in Alaska in 2022 at Annette Island, and their numbers in the state have grown dramatically. In June, their shells were found in Ketchikan. (Photo by Emily Grason/Washington Sea Grant)On a sandy beach in a state park in Ketchikan, a group of local beachcombers encountered something ominous: shells of …