Wildlife expert and adventurer Steve Backshall has spent his entire life getting up close to incredible animals. Now he wants to study four ‘monstrous’ animals on our planet, by entering their underwater world and getting closer to them than ever before. In ‘Swimming with Monsters’ Steve joins forces with behavioural experts, scientists and extreme divers in order to dive with fascinating but deadly animals. They then locate the creatures in order for Steve to do the unthinkable – swim with them.