Marine biologist, Prof Robert Warner, discusses the relationship between marine predators and their prey. He also explains why marine environments may be more robust than terrestrial ecosystems in the face of human impacts. Presented by Dr Dyani Lewis. 

See more at: http://upclose.unimelb.edu.au/episode/292-prey-oceans-how-marine-predators-influence-reef-ecology#sthash.bd5Oqcfr.dpuf