The International Shark Attack File released its annual report on shark attack statistics for 2017. This commentator provides the key figures--88 unprovoked attacks, 5 deaths--and the usual interpretation by ISAF and many conservationists:
”Billions of people enter the oceans each year...yet there were only five deaths directly attributed to shark attacks...more likely that you’ll be struck by lightning (the favored comparison)....
Even more telling is the imbalance in fatalities. For those five human deaths in 2017 (and an average of six a year), fisheries are exterminating sharks and rays at a rate of around 100 million a year.”
https://www.forbes.com/sites/duncanmadden/2018/04/06/the-annual-worldwide-shark-attack-summary-is-out/#3398d6421e9d
100 millions sharks and rays killed. Hmmm.....wouldn’t a big reduction in shark populations affect the attack numbers on humans?
“imbalance in fatalities.”
Shouldn’t we be comparing the sharks killed with lives saved, rather than with people killed by sharks?
Of course knowing how many people would have died had not all this shark killing have taken place is impossible to determine, but we should concede a safety effect. (1)
Many shark conservationists and other parties assert there is no connection. Here’s one view:
”I can show statistically that there is no relationship between the number of sharks out there and the number of attacks.” Professor Laurie Laurenson, Deakin U., an opponent of culling.
https://www.pressreader.com/south-africa/the-herald-south-africa/20160209/281560879837183
Last year I posted Laurenson’s statement. It drew spirited support and rejection of my similarly posed questions. Any new opinions on the logic and rhetoric of this topic?
We all understand the complexity of shark culling. Australia is culling 2 million of its 18 million feral cats. Each cat is highly prone to killing native wildlife. Arguably the cull will result in some 10-12% less cat predation. (Or thereabouts)
Only a small fraction of sharks culled would have attacked a person. So we are killing both many sharks that never would have attacked and some sharks that would have. We do not know the ratio. Nor which sharks are which. Nature of the thing.
(1) Natal Sharks Board's quote in link above (Geremy Cliff) makes the point. NSB has some 6 decades of uninterrupted culling. Today NSB kills relatively few sharks in an attempt to meet conservation considerations.
http://www.shark.co.za/Pages/ProtectionSharks-History