Request Meeting Document Document Number: SC-CAMLR-VII/BG/30 Author(s): I.Everson, D.G. Bone, J.L. Watkins (United Kingdom) and K.G. Foote (Norway) Agenda Item(s) SC-CAMLR-VII - undefined Abstract Encaged aggregations of swimming krill have been measured at 38 and 120 kHz. The results indicate that the target strength values are substantially lower than previously assumed.