To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Example of boto prey capture. The prey hydrophone and an attached fish is lowered into the water before the fish is grabbed shortly after by a boto. The movie is filmed from a GoPro camera mounted close to the centre of the star array. Amazon river dolphins (Inia geoffrensis) modify biosonar output level and directivity during prey interception in the wild Michael Ladegaard, Frants Havmand Jensen, Kristian Beedholm, Vera Maria Ferreira da Silva, and Peter Teglberg Madsen Journal of Experimental Biology 2017. 220:2654-2665; doi: 10.1242/jeb.159913 Download Original Video