Spot a Shark is a non-profit dive community research project that has been established in conjunction with the Marine Ecology Group at Macquarie University. We will be utilizing a computer based software program to identify individual sharks. Each grey nurse shark has a series of pigmentation spots on either side of their body. These markings are unique to each shark (just as human fingerprints are unique to each one of us). We are therefore asking members of the dive community to send in their photos of GNS to help catalogue the population along the east coast. These photos (if suitable) will then assist our marine biologists to learn more about these endangered creatures.