Shark sightings are recorded and collated by Primary Industries and Resources South Australia (PIRSA) Fisheries. Although such sightings are seldom shown or verified any inhabitant wishing to article a shark sighting overly is not livlihood threatening can use FISHWATCH on 1800 065 522. In the circumstances of an immediate threat please engage the emergency 000 amount and study to police. There are throughout 300 unique creatures of shark and properties time period of 20 centimetres to 12 metres in length. Only right about 30 creatures are renowned to be unsafe to humans and on 20 of such can be discovered in Australian waters. Most episodes are attributed to just two species; Tiger Sharks, White Pointers (Great Whites), Bull Sharks and Bronze Whalers.