<P>Sapphire lives in two worlds. On land she walks the rocky shores of the Cornwall coast?but under the sea she can swim like a seal by the side of her Mer friend Faro. </P> <P>Now both of Sapphy's worlds are threatened. In the profound depths of the ocean, where the Mer cannot go, a monster called the Kraken is stirring. He has the power to sweep Ingo away and shake the land from its foundation. </P> <P>Because of her mixed blood, Sapphire can enter the Deep. With a great whale as her guide, she will journey to a place so far from the sun, no light can find it?and confront an evil that's even darker. </P>