Soundings: Diving for stories in the beckoning sea

Perhaps the closest a human being comes to visiting another planet is to descend into the sea. In Soundings, Kennedy Warne connects his lifelong exploration of the underwater world with a global story of humanity's relationship with the sea.
Drawing on more than 20 years of fieldwork for National Geographic, he shares experiences that range from diving with harp seals under the sea ice of the Gulf of St Lawrence to following the legendary 'sardine run' along South Africa's Wild Coast; from w...