Bull Sharks Linger In Warming Sydney Waters

Fonte: International Business Times

Bull sharks are lingering off Sydney's beaches for longer periods each year as oceans warm, researchers say, predicting they may one day stay all year AFP Bull sharks are lingering off Sydney's beaches for longer periods each year as oceans warm, researchers said Friday, predicting they may one day stay all year. The predators are migratory, swimming north in winter when Sydney's long-term ocean temperatures dip below 19 degrees Celsius (66 degrees Fahrenheit) to bask in the balmier waters off Queensland. A team of scientists looked at 15 years of acoustic tracking of 92 tagged migratory sharks in an area including Bondi Beach and Sydney Harbour.