Herring, redfish, snailfish, sand lance, and Atlantic salmon are also common prey items. "Ikanago shoyu" of Kagawa Prefecture is made from sand lance. This copepod is preyed on heavily by the sand lance in the northwestern Atlantic. A sand lance or sandlance is a fish belonging to the family Ammodytidae. In 1996, the Sand Lance was sent on a patrol to the Arctic Circle. Upon that purchase, "Sand Lance" was struck from the Naval Vessel Register. The successes of her maiden war patrol brought "Sand Lance" a Presidential Unit Citation. For her success, "Sand Lance" underwent a 16-hour, 100-depth charge pounding from the accompanying destroyers. Atlantic mackerel ("Scomber scombrus"), Atlantic herring ("Clupea harengus") and sand lance ("Ammodytes hexapterus").