Serrated teeth have a jagged edge - a bit like the blade of a bread knife. Sharks don’t chew, so this combination of pointed lower teeth and serrated upper teeth helps them to cut prey into smaller ...

Mark Graham lived to tell the tale of his encounter with a "super inquisitive" great white shark ... its large mouth, baring rows of razor-sharp teeth, In the clip, the shark swims up to Graham ...

Past studies have estimated the megalodon’s length and body shape by comparing it to the great white shark, which has similar ...