Science

Swimmer fends off shark with diving knife as Hawaii officials report second attack in less than a week


Shark attacks are on the rise, but scientists say fears are largely misplaced

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For the second time in less than a week, Hawaii officials put up shark warning signs Tuesday after a man was bitten by a shark. Hawaii County Police said the 68-year-old man, from Waikoloa, was swimming about 400 yards from shore in Anahuamalu Bay on the Big Island when he was bitten on the lower left torso.

“The swimmer attempted to fend off the shark with a diving knife, and the shark released the swimmer,” police said in a news release.

The man was taken to an island hospital. Police said he was in stable condition and was to be airlifted to Oahu for treatment of injuries that were not life-threatening.

The state Department of Land and Natural Resources said the tiger shark is said to be 12 feet long.

Witnesses told Hawaii News Now that the shark “got a good chunk of the left side of its back.”

Eyewitness Anthony Singh told the station, “It was very busy.” “It was brutal.”

The warning signs later moved across the bay to Waikoloa, a resort area.

Shark signs were posted in southern Maui last Thursday after a 60-year-old woman from Washington state disappeared while snorkeling, Her husband and witnesses told authorities that she had been attacked by a shark. The search of the area around Kivakapu Point was called off on Friday.

These incidents come three months ago after a woman suffered “Serious” Shark Bite In a bay on the North Shore of Maui.

published research Last year showed that shark attacks against humans are often the result of mistaken identity. According to the research, sharks have limited color perception if they are not completely color blind, and they have spatial resolving power that is “significantly worse than that of humans.” So when they’re looking for prey, the researchers found, they rely more heavily on speed and brightness contrast.


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