“Researchers at Sydney’s Macquarie University … trained juvenile Port Jackson sharks to swim over to where jazz was playing, to receive food. It has been thought that sharks have learned to associate the sound of a boat engine with food, because food is often thrown from tourist boats to attract sharks to cage-diving expeditions – the study shows that they can learn these associations quickly. The test was made more complex with the addition of classical music – this confused the sharks, who couldn’t differentiate between jazz and classical.”