NO BREEZE STIRRED THE WATERS, YET THEY MOVED...A trip round Northumberland Island - an ideal treat for a summer's day - goes terribly wrong for young George Smith when he is sucked into the depths of a whirlpool down to a watery grave.But is he lost forever? When Dr Jackson and Professor Morrison, scientists at Newcastle University, receive a gleaming prism with a letter from the missing boy - now a grown man - they begin to wonder.Soon the whole nation and the world's press are up in arms about the secret that's been kept from them: the astonishing discovery of a new world beneath the sea.Join Jackson, Morrison and their mission team as they stretch science and physical endurance to the limit establishing contact with the mysterious denizens of the deep - the creatures of the Emerald Realm!