As temperatures soar in the UK, the Guardian’s Science Weekly team have decided to pull this episode out of the archive. Prof Callum Roberts is a British oceanographer, author and one of the world’s leading marine biologists. Sitting down with Ian Sample in 2019, he talks about his journey into exploring this marine habitat. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>
