A missing porbeagle shark was likely killed by a great white. It’s the first known case of adult porbeagles being hunted by a predator, scientists say.
There are not many animals that can mess with adult porbeagle sharks — or at least, that’s what researchers used to think. But then, in 2020, a porbeagle longer than Shaquille O’Neal is tall went missing nearly six months after it was fitted with tracking devices.
To be clear, scientists did not witness a great white shark attack the porbeagle. Rather, Anderson and colleagues pieced together the missing shark’s hypothetical demise using location, temperature and depth data received from tags that had been attached to the shark during a routine catch-and-release survey. These devices also allowed the scientists to track the porbeagle from Cape Cod, Mass., to Bermuda — a migration from which it would never return.
To figure out the identity of the killer, Anderson looked at a host of variables that only became available after one of the tags floated back up to the water’s surface, presumably after being excreted by the larger predator. “There’s no question that something ate the tag,” Winton says. “But it’s hard to tie that necessarily to the mortality of the porbeagle.”
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