Some needle-like teeth, such as those of the tasselled wobbegong, are straight. Others are curved and can be used to hook prey, such as those of hooktooth sharks. The jaws of a Port Jackson shark.

The crested horn shark, which looks almost identical to the Port Jackson shark, is a major predator of Port Jackson shark eggs. They crush the eggs using their strong jaws, feeding off the rich yolk.

Milan suggested that the vomit may have come from a bottom-dwelling shark with crushing teeth, similar to the modern-day Port ...