Shark wars /
E.J. Altbacker.
- New York : Razorbill, c2011.
- 248 p. : ill. ; 21 cm.
Illustrations on endpages.
With the ocean on the brink of chaos, a young shark Gray and his best friend Barkley, exiled from the safety of their peaceful reef home, will have to battle ferocious shivers, or join them, to survive.