In this episode, James talks to Dr Chayya Chaudhary, a post-doctoral fellow at the Goethe Institute, about how climate change is upending the pattern of life in the oceans. Tropical species are moving south, which is bad news for temperate species, and all the people who depend on marine life in tropical oceans. Read more about her research on The Conversation. 

And we hear about some of Australia's most threatened sharks and rays. Dr Leonardo Guida from the Autralian Marine Conservation Society tells us about a new study finding that 10 species of shark and rays, all of them found only in Australia, are at immiment risk of extinction due to fishing. Moreover none of them are protected under Australian law. Read more about the report.