title: Target detection by the beluga using a surface-reflected path.
abstract: During an echolocation-in-noise experiment we suspected that a beluga (Delphinapterus leucas) was using a surface-reflected path to maximize detection performance. We tested and confirmed this suspicion by acoustically and mechanically denying access to surface path information. The whale's performance varied as the surface-reflected path was denied.
mesh_terms: D000818:Animals; D002591:Cetacea; D004455:Echolocation; D009622:Noise; D009949:Orientation; D014907:Whales