Ben Fogle and Ellie Harrison go in search of Britain's whales and sharks. Off the coast of Ireland, Ben comes face to face with a pod of humpbacks and witnesses dolphins working with the whales to hunt down their prey. But sharks are proving much harder to find. Using the biggest shark bait on Earth, the duo prepare to head out to sea. Will their ambitious operation succeed?

Ben Fogle and Ellie Harrison go in search of Britain's whales and sharks. In an ambitious operation, Ben and Ellie return the body of a humpback whale to the sea and reveal how the death of these marine giants can trigger a feeding frenzy to match. With over 200 blue sharks attending the feast, it marks the greatest gathering ever in UK waters.