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Credit: Claire Collins Bans on shark fishing are only partially effective in protecting sharks, new research suggests. Scientists from the University of Exeter, international conservation charity ZSL (Zoological Society of London) and Sri Lankan NGO Oceanswell examined the effects of a blanket ban on landing thresher sharks, brought in by the Sri Lankan government in 2012. Information gathered from local fishers suggests the ban has stopped targeted fishing for the sharks - but persistent bycatch (accidental catching) continues. The study also found that bycatch appears to be widely unrecorded, partly due to mistrust and confusion amongst fishers. Sri Lanka s long-standing ban offers us an opportunity to assess the impacts of bans, which are increasingly being implemented globally to protect sharks, said lead author Claire Collins, of the University of Exeter and ZSL s Institute of Zoology.

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