PBS Eons has a new episode on Youtube.  This one is about the controversy surrounding how Spinosaurus lived…. how much time did they spent in the water?

What does it mean to be a “semi-aquatic” dinosaur? Was it wading in the shallows, or could it have been a skilled swimmer? Each scenario paints a very different picture of Spinosaurus, and the discovery of new fossils has paleontologists rethinking just how weird and watery this dinosaur was all over again.