Deep Water, Paperback Book, By: Isla Whitcroft

Amid the sunshine and glamour, Cate faces a deadly dilemma. When sixteen year old Cate receives a frantic call from her boyfriend in Australia, she drops everything to join him. Michel is working in a marine sanctuary that has become inexplicably overrun with hyper aggressive sharks. Both the animals and humans are in grave danger, but the authorities won't do anything to help. Cate needs all her quick wits, plus the help of her computer geek brother and her glamorous friends to prevent an eco catastrophe.