By Dan Kedmey
January 12, 2015

Marine biologists say they’ve never seen anything like it: Possibly the first known snapshot of an elusive species of shark giving birth in the open ocean.

The image, which was published in the December issue of the journal Coral Reefs, was captured off of the Philippines coastline in 2013. Scientists there, during a routine reef survey, noticed a “visibly” agitated thresher shark swimming nearby, trailed by several cleaner fish pecking at its pelvic region. One marine photographer snapped a photo, which later revealed the cause of the shark’s agitation: The head of a newborn pup jutting out head-first from the shark’s body.

“I freaked out,” study author Simon Arthur told BBC News, adding that it was the first image of a shark birth he had encountered in his career.

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