More Australians have been killed in unprovoked shark attacks this year than in any year since 1934.

But the total number of shark bites is in line with the annual average over the past decade. It is prompting experts to consider whether the La Niña weather event, associated with cooler sea surface temperatures in the central Pacific, may be affecting where sharks search for prey.

On Sunday, police in Western Australia called off their search for the body of Andrew Sharpe after pieces of the 52-year-old father’s wetsuit and surfboard had washed up on the beach near Esperance. Friends saw a shark bite him two days earlier.

His death was the seventh from a shark bite in Australia in 2020 and the sixth from an unprovoked attack.

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According to the Australian Shark Attack File, it has been 86 years since six people last died from unprovoked shark bites in a single year.

In 1929, nine people died from unprovoked shark bites in Australia – a record that preceded debate about introducing the first shark nets at Australian beaches several years later.

Read more: yahoo