sharks increase

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The threat to ocean-going sharks is more severe than previously thought, according to conservation experts. Scientists with the World Conservation Union, which publishes the Red Lists of Threatened Species, have upgraded the "threat" category of several sharks. Those now considered "vulnerable to extinction" include the shortfin mako, a favourite of recreational fishermen, and the long-tailed thresher shark. Scientists say over-fishing is a principal reason for the decline. The World Conservation Union's (IUCN) shark specialist group announced their re-assessments at a workshop in Oxford, UK. Cutting off shark fins, which are prized for soup in some east Asian cultures, is banned in many fisheries. But IUCN says enforcement is often weak. what do you think?discuss