A never-seen-on-screen series of original exciting adventure books featuring Ant, Fontaine, Kaiko and William, the stars of CBBC's number one programme The Deep, for 7+ readers. Watch the action, read the adventure!

The sea is deep and full of secrets ... Something is seriously wrong in the South China Sea.

Journeying along the celestial equator, the Nektons – a family of daring underwater explorers – are dispatched on an urgent mission to investigate. Magma is erupting from the ocean floor and sending poisonous gases into the water, endangering the lives of the sea creatures that live there.

But the Nektons get more than they bargained for when they discover that an ancient and secret creature has been disturbed in the depths of the Dragon Hole – the largest Blue Hole in the world! Will they make it out alive? And more importantly, will they find an all-important clue to lead them to the lost city of Lemuria?

Perfect for fans of Beast Quest, Sea Quest and Ninjago