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When Ben Burville first began to dive with grey seals he had no idea that he would witness such extraordinary animal behaviour. Nor was he prepared for the incredible curiosity that the seals displayed and that he would be able to 'interact' with them in a friendly way. During his many dives off the UK's Northumberland coast, Ben has captured hours of amazing footage and this is just a a taster of some of his most spellbinding encounters.