Movie 1.

Demonstration of a harbour porpoise repeatedly scanning its biosonar across two targets in a discrimination task. Courtesy of Magnus Wahlberg.

Directional biosonar beams allow echolocating harbour porpoises to actively discriminate and intercept closely spaced targets

Chloe E. Malinka, Laia Rojano-DoƱate, and Peter T. Madsen

Journal of Experimental Biology 2021. 224:None-None; doi: 10.1242/jeb.242779