Shark and ray populations drop 70%, nearing 'point of no return,' study warns

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Some species of sharks and rays could disappear from our seas altogether after a sharp drop in their numbers due to overfishing in the past 50 years. A study found that shark and ray populations fell by 71.1% from 1970 to 2018.

A study published Wednesday in the journal Nature found that shark and ray populations fell by 71.1% from 1970 to 2018."Knowing that this is a global figure, the findings are stark," said Nick Dulvy, a biologist at the Simon Fraser University and a co-author of the study."If we don't do anything, it will be too late. It's much worse than other animal populations we've been looking at.

Sharks are also particularly vulnerable to over-exploitation due to their low population growth rates and long generation times -- in some shark species it can take several years, even decades between the birth of an individual and the birth of its first offspring. Rays, too, have faced rapid depletion and local extinction due to overfishing in their historical habitats.

 

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Remember the Shark Cartilage craze of the 1990’s. Health supplement stores flogging this supplement as a cancer fighter. Millions of sharks where slaughtered. Then you have the Shark Fin soup as an expensive delicacy in many Asian countries. Selfish disregard to source.

MA_Sharks 70%!? That's very high. I hope there is an error in that because that is frighteningly high and could easily lead to extinction of several subspecies. And sharks are known to take many years to become sexually mature & giving birth is also a long process.

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Maybe you should try a little offshore fishing. Almost can't get a fish in without the sharks biting the body off and leaving the head on the hook.

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