The Secret Life of Sharks
The Infinite Monkey Cage
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The Origins of Sharks
We tend to think sharks are ancient, and you might think they were around when the dinosaurs were in the land. They're older than the dinosaurs, which is my favourite fact about sharks. Back then, there was no complex life on land, really. And all of a sudden, this flourishing marine environment underwater, this incredible predator arrived. So now we have a far greater excess of bony fish around than we do cartagenas fish. But there would have been times in prehistory when there might have been 80% of the animals underwater would have been effectively sharks. That's one of their main differences from other fish lineages.
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