Steve Backshall's journey from pole to pole continues as the expedition reaches Hawaii. He meets a shark with a fearsome reputation and swims alongside humpback whales. Show more
Discover 11,128,835 listings and 280,427 playable programmes from the BBC
Steve Backshall's journey from pole to pole continues as the expedition reaches Hawaii. He meets a shark with a fearsome reputation and swims alongside humpback whales. Show more