Five of the most common coral reef shark species have declined by 60 to 70 per cent. Read more at straitstimes.com.
WASHINGTON - Overfishing is driving coral reef sharks towards extinction, according to a global study out on Thursday that signals far greater peril to the marine predators than previously thought.
A team of more than 100 scientists found that five of the most common coral reef shark species - grey reef, nurse, Caribbean reef, blacktip reef and whitetip reef - declined by 60 to 70 per cent. Professor Simpfendorfer added that the overwhelming factor in the decline was overfishing, both targeting sharks for their fins and meat, and unintentionally killing them as bycatch.The prey they eat increases in number, but the next level down decreases, and so on - creating unpredictable disruptions that risk human food security.Rise in ocean plastic pollution ‘unprecedented’ since 2005
In the shark study, scientists used baited remote underwater video stations – cameras with a small amount of oily fish hung placed on arm – to draw out and observe sharks in deployments that lasted an hour.
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