In Australia, scientists have made an astonishing discovery: there's not just one population of great whites, there's two. And one appears deadlier than the other. Experts pit the shark tribes against one another to discover what's really going on.
In Australia, scientists have made an astonishing discovery: there's not just one population of great whites, there's two. And one appears deadlier than the other. Experts pit the shark tribes against one another to discover what's really going on.
