It was holding a corkscrew-shaped object – a Port Jackson shark egg – in its mouth. Nicolas wanted to take a photograph that was about the egg as much as the shark. Using a wide-angle lens and two low ...

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.

One of the most famous bullheads — and the largest — is the Port Jackson shark (Heterodontus portusjacksoni), an Australian species that can reach up to 5.4 feet (1.65 meters). Carpet sharks ...

The Port Jackson shark (pictured) is one of 77 species of shark, ray and chimaera to fall under the ... [+] new protections. In a landmark achievement for marine conservation, South Australia ...