Spinosaurus was a dinosaur that was around 13 metres long, and looked a little like a T-Rex with the addition of a massive sail on its back. There's been much debate around how it lived; while it seems to be tied to the water, it's unclear how close those ties were. One theory suggests it was actually like a crocodile, living a pretty aquatic life. But new research points to features of its anatomy that suggest that it was a lot more like a giant, very toothy heron, waiting at the water's edge. Adam Murphy spoke to David Hone from Queen Mary University of London about the dino debate... Like this podcast? Please help us by supporting the Naked Scientists