According to the department, St. Mary's resident Lauren Harden caught a crevalle jack that weighed a whopping 33 pounds, 10.72 ounces. She caught the fish on May 24 on Cumberland Island, the largest and southernmost of the state's barrier islands. According to Georgia Aquarium, crevalle jack are large, silvery fish that are often found in large schools in open water, usually over the continental shelf.