Messenger New South Wales is the latest Australian state to hear calls for sharks to be culledin response to a spate of fatal and non-fatal incidents.
There have been 20 fatal shark attacks in Western Australia in the past years, 7 in the last 3 years. The State Government believes that West Australians, particularly those who use the ocean, expect a stronger response in tackling the shark risks.
We believe that Western Australians who love to use the ocean - the swimmers, surfers and divers — expect the Government to do something, and provide increased protection.
The new Shark Hazard Mitigation Policy is about providing extra protection from sharks at popular West Australian beaches.
We have canvassed similar programs in Queensland, NSW and South Africa to develop a policy suited to current West Australian surveillance of sharks and coastal conditions.
The deployment of baited drum lines 1km from shore at the selected beaches forms one part of an overall strategy including our research into deterrents and shark behaviour, tracking, surveillance, funding of Surf Life Saving WA and public education.
While we understand this policy is contentious and will cause anxiety for some in the community, it is clear that the risk in our waters is very real for many West Australians. This is not removing a vulnerable species, or changing an ecosystem, it is a public safety issue.
Peter Law in Perth Now runs through a few ongoing projects. Beach mufflers - Curtin University - "A two-year project will record the sounds of swimmers, surfers and kayakers to investigate how the noises propagate underwater along WA beaches.
The team will compare the sounds to shark hearing curves to determine what part of the sounds are audible to sharks and whether they are attracted by the noise.
Dr Ryan Kempster also detailed the possible successes of chemical repellants, which have been used since the mid s "Some early testing revealed that the smell of rotten shark flesh appeared to be effective, presumably because the smell of rotten shark to a live shark may indicate danger and so the natural response is to flee," Dr Kempster said.
Concerns have been raised by conservationists about the attractive potential of baited hooks. But it may be too simplistic to assume that placing baited hooks in the water will attract sharks. As I already noted, the baits themselves are too small for sharks to smell from more than a few hundred metres away.
Sharks are prone to bioaccumulation through diet (biomagnification) as they incorporate metals very efficiently and eliminate them slowly. Eating shark meat exposes you to these potentially dangerous toxins, in particular, high levels of the methyl mercury. While a certain amount of mercury in the environment is natural, growing worldwide pollution of our oceans is increasing the risk of high . Illegal poaching and hunting: selling shark fins for soup and sportfishing for shark-jaw trophies. Nets: placed along coastlines to keep sharks away from beaches. It turns out that sharks have more reason to fear humans than the other way around. We consider the use of shark netting and baited drum lines to be outdated and recommend education to increase public awareness of the need to safely coexist with sharks and non-lethal bather protection programs. SHARK CULLING IN Queensland. Queensland currently .
Chris Neff, a shark researcher from the University of Sydney, says there is little chance a baited hook on its own, in a sea filled with natural bait, could have any attractant effect on a distant shark.
But he says the effect of a hooked shark, turtle or ray might be a different story.
There are no fish left so the sharks get hungry and they attack. This is an argument continually trotted out by conservationists whenever shark attacks occur. It conveniently double binds the fishing industry who benefit from the contracts given during shark culls by tying human suffering to overfishing.
Both of which are increasing in numbers in Australian waters," he says.
McPhee said some shark programmes had proven effective in their aim to reduce shark attack incidents. Shark control programs are generally considered to have improved the safety of people in the water. The main lines of evidence that support this assertion are comparison of shark attacks before and after implementation of shark control measures, and comparisons at locations with and without such measures.
However he said there were other examples in which they had been unsuccessful. I have already mentioned Hawaii as a notable failure.
Chris Neff said earlier that this programme was the only one that could be compared to the WA shark cull because of the technical similarities. But McPhee said the Hawaii programme targeted a different species of shark and was therefore a poor comparison. On the WA programme, McPhee said the baited hooks may be effective in reducing shark bite incidents.
He said logic implied that a reduced number of sharks meant less chance of attack. But he warned that there was no guarantee this would happen.
He said the risk the government is attempting to mitigate, needed to be placed into proportion. Between andpeople drowned while swimming off the Australian coast. Only 5 people died of shark attack in this period.Shark culling is best thought of as an indiscriminate method of removing sharks from our coastal ecosystems.
The WA and Queensland culls have led to the capture and death of many non-targeted sharks.
“Shark finning” is a common but infamous practice for killing sharks. It consists of cutting only the fins of sharks on the open ocean and throwing the rest of the body with the possibility that the sharks die bled or attacked by other marine animals.
States Andersen, “If we can put a man on the moon, we certainly can determine a method to ensure sharks and humans can peacefully coexist in the shark’s domain. Programs like the Shark Spotters in South Africa prove that there are viable alternatives to shark nets .
The answer to the question 'will killing sharks save lives' is: maybe. We may never know if the shark cull has made Western Australia's beaches safer. Targeting large sharks using drum lines and. Top reasons why you shouldn't kill/consume sharks. growing worldwide pollution of our oceans is increasing the risk of high mercury levels in the fish we eat, particularly fish at the top of the food chain like sharks.
Threats to Sharks Why Protect Sharks? There are many reasons why you need to eat healthily: be in a good mood, decrease weight, become more productive, become healthier, etc. You can tell about the pros and cons of electric cars and make the accent on disadvantages.
In practice, electric cars don’t cause pollution directly. Why do we need to stop tipping waiters? In fact.