First dorsal fin comes to a point and is not curved backwards. Dr Molony said bull sharks were residents in the Swan and Canning system because as a species they spent much of their life in rivers and estuaries, while sightings of them in local coastal waters were much rarer. But they are by far the most adaptable and able to live almost anywhere in freshwater or saltwater habitats. Surf Life Saving WA received a report from a member of the public of a “2.5 metre white shark” was swimming near the Nedlands Yacht Club about 12.30pm. From December to January, there were 11 unverified bull shark sightings reported on the State Government’s SharkSmart website, as far upstream as Bassendean. They are a normal component of the Swan River system. But the Department of Fisheries says an increase in sightings during summer is nothing out of the ordinary. The only recorded fatal bull shark attack in the Swan River was in the 1920s, when a young boy was killed. 'Dangerous' bull sharks use the Swan River as a nursing ground, travelling into the upper reaches of the system and growing to more than a metre in length, scientists say. Despite their reputation, only one person – a young boy in the 1920s - has been killed in the Swan and Canning River system in recorded history. In January PerthNow reported a spate of bull shark sightings in the Swan and Canning River systems. “Treat it like going to the beach … there are sharks in all waters, just be aware,” he said. According to the Swan River Trust, the sharks give birth to up to 13 young after a gestation period of between 10 and 11 months. Bull sharks are one of three species deemed dangerous by the government, along with white and tiger sharks. Get your bonus Spin to Win codeword on The West! “Treat it like going to the beach … there are sharks in all waters, just be aware,” he said. But the Department of Fisheries says an increase in sightings this time of year is nothing out of the ordinary. Unprovoked counts Despite their reputation, only one person – a young boy in the 1920s - has been killed in the Swan and Canning River system in recorded history. Threats In some parts of the world the Bull Shark is a popular game fish. Along with the great white and tiger sharks, the bull shark has a reputation for being dangerous. He was bitten on the back of the thigh, but died about two hours later from shock and loss of blood. In March, Perth man Robin Morritt, 61, filmed a close encounter with a sandbar shark just metres from the Swan River shore at Matilda Bay. But Dr Molony being incident-free for so long did not mean a shark attack in the river would never happen again. A large shark, up to 2.5 metres long, was seen in the Swan River on Thursday within 15 metres of the shore in Nedlands. But Dr Molony being incident-free for so long did not mean a shark attack in the river would never happen again. Dr Molony said it was likely other species of sharks spend time in the river, but sightings are rare and unconfirmed. The bull sharks are usually found in deeper waters between South Perth and Maylands and they mate and give birth in late spring and early summer. One river user posted footage on Facebook late last month, claiming it was of a 2m bull shark he saw from a distance in the Canning River while fishing for bream. "Along with the great white and tiger sharks, the bull shark has a reputation for being dangerous," the Trust's website states. A 13-year-old Scotch College student was attacked and killed when he was swimming near the college boatshed in January 1923. In recent years there have been several other fatal Bull Shark attacks on Australia’s East Coast. File image. A 1.1m bull shark caught in the Swan River in 2011. Dr Molony said bull sharks in WA were smaller than those found elsewhere. The only recorded fatal bull shark attack in the Swan River was in the 1920s, when a young boy was killed. They are a normal component of the Swan River system. Dolphin and bull shark sightings are relatively common in the Swan River, and there is also a historic report of a fatal shark attack in Perth’s main waterway. Dolphin and bull shark sightings are relatively common in the Swan River, and there is also a historic report of a fatal shark attack in Perth’s main waterway. Unlike bull sharks, dolphins are air breathers. Since the beginning of last month, 11 unverified bull shark sighting have been reported on the State Government’s SharkSmart website, as far upstream as Bassendean.
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