Shark Bait (Extreme Adventures Book 3)

When Sam and his friend are swept off the coast of the Great Barrier Reef, Sam must fight to keep them alive. As night falls over the ocean, the underwater predators start moving in?

Action has a new hero - Sam Fox! With a talent for attracting danger, Sam Fox is an expert at getting himself into (and out of) the most extreme situations. This series has a strong appeal with a courageous young hero and exotic settings and has non-stop action and short chapters which will engage reluctant readers.
From a parent:

I dare you to try pre-reading this book and be able to put it down after just one chapter.

About the author:
One of twelve children, Justin grew up on a farm in Otaki, New Zealand. He wrote his first book, a ten page cartoon about his pet turtle, Bubble, when he was nine years old. His next cartoon was about Moriarty, his guinea pig, and filled a complete exercise book. When he was eleven, Justin began writing his first novel, but conked out after 35 pages.