Steve Westnedge plays his saxophone for a Leopard Seal known as “Casey” as part of a study on the animal’s reactions to different sounds at Sydney’s Taronga Zoo August 19, 2013. Westnedge, who is also the zoo’s elephant keeper, plays his saxophone next to the underwater viewing window to assist the study by researchers from the Australian Marine Mammal Research Centre. The seal occasionally responds with his own sounds, depending on the time of year, which are normally used when wanting to attract mates or establish territories.