Rescuers in Busan fail three times to free dusky shark trapped in port canal

A dusky shark nicknamed Bukangi has stayed in the North Port canal in Busan for more than a month. Authorities have made several attempts to rescue it, but each time the shark swam back into the canal. Experts suggest that busy port activity may be making the canal feel safer to the animal. Because the dusky shark is an endangered species, officials are worried about the lack of feeding and the drop in water temperature.