Colin Speedie's new book takes us from swashbuckling hunts of giant sharks by reckless individuals with makeshift harpoons, through an age of mass slaughter, to the author's personal shark-tracking adventures in the name of conservation.There are few marine creatures as spectacular as the Basking Shark. At up to 11 metres in length and seven tonnes in weight, this colossal, plankton-feeding fish is one of the largest in the world, second only to the whale shark. Historically, Basking Sharks were a familiar sight in the northern hemisphere - off the coasts of Norway, Scotland, Ireland, Canada...