<B>Sharks, shipwreck, and sunken treasure in this action packed survival series from bestselling and award-winning author Gordon Korman.</B><P></P><P>What lies in the deep? Not just coral and sand. Not just undersea creatures that have never seen the light. No, the deep holds something even more mysterious and valuable. </P><P>Kaz, Dante, Adriana, and Star started the summer thinking they were going to study marine life. Now they've found sunken treasure. And they're not the only ones who want to keep it.</P>