Tony, fair go mate! could you think I did not know that? did you not see the? after I will never know why?
The book was a very interesting one, not written by Zane Grey, a well known Author and fisherman,
Even before Bob Dyer and Jack Davies broke fishing records including sharks.
Research, goggle, then call me lier.
But if you find the book read it, you will not be sorry, as stated or briefly mentioned both by me and nicknamenick spear fishing to kill sharks existed
How many died? Trawlers returning to the processing plant, full of dead sharks, to harvest their liver oil, and brand it cod liver oil, must have in the time it existed killed far more than drum lines
goggle nelsons bay shark harvesting for liver oil

//as stated or briefly mentioned both by me and nicknamenick spear fishing to kill sharks existed
How many died? Trawlers returning to the processing plant, full of dead sharks, to harvest their liver oil, and brand it cod liver oil, must have in the time it existed killed far more than drum lines//

Yeah, why do you think shark populations have declined?

Over-fishing isn't a good thing, Belly.

Toni, I looked into a couple of your links on page 3, and found that the comments about fewer sharks was taken from a localised area and not a broad survey covering the whole world.
So we can't use that info as a guide to shark numbers, world wide.

Top 5 endangered sharks | MNN - Mother Nature Network
https://www.mnn.com/green-tech/research-innovations/blogs/top-5-endangered-sharks

You can donate today to adopt a shark . Or contribute to the dental care for plastic-decay damage to shark teeth . Dentists without borders bring a little ray of hope to homeless sharks .

Tony my reference to shark fishing, and past killing was an effort to say it did not seem to affect current numbers
Not all that good researching but entered shark liver oil,and it is harvested still today.
In many parts of the world, and used as medicine even in today's America, in fact quite widespread, will under line will in time find that book that tells us it was sold as cod liver oil.
Shark fin is as we both know seeing many killed, my point was never extermination, it as without shame putting humans first

yes researched for that book, it exists but I could not find it.
It was 50 or more years ago when I read it, can remember still, it was a shock but well written and it stuck.
During my search I find shark liver harvesting still exists in some third world country,s, too that shark fins are still harvested
Even got in to reading expert opinions why shark fishing is killing them out
And other saying it will be the reason we preserve them while continuing to harvest.
Never the less as was to be expected my search found many many shark attacks, storeys of White Pointer breeding areas of Newcastle NSW and fears that was a danger to swimmers