As South Australian beaches prepare for their first summer with the devastating algal bloom, scientists believe they may have identified a little-known algal species behind the event.

The breakthrough research, which is undergoing academic peer review, has found that Karenia Cristata is the dominant species in this major bloom event.

Then, questions about the Liberal party's leadership and the Coalition's future intensified this week as the Liberal party continues to review its energy policy.

And as Australia's social media ban for children under-16 fast approaches, how much do you know about the platforms on the ban list, like Reddit and Kick? 

We'll also head to the US where the Supreme Court has begun hearing a landmark case on the legality of Donald Trump's sweeping global tariffs.

And we'll turn to a  Democrat strategist for the washup of the New York City Mayoral race. 

Recap the morning's news, politics and global affairs with the Breakfast Wrap.