September 21, 2018, 0:54

The human feet that routinely wash ashore in the Pacific Northwest, explained

The human feet that routinely wash ashore in the Pacific Northwest, explained

The 14th human foot in a decade washed up on the shores of British Columbia, Canada, earlier this month.

The Royal Canadian Mounted Police reported that a man walking on a beach on May 6 found a lone right foot wearing a hiking boot wedged between logs on Garibola Island near Vancouver.

It followed the foot wearing a black velcro athletic shoe with the tibia and fibula still attached that was found back in December along a different beach in British Columbia. That foot was traced to Stanley K. Okumoto, who was 79 when he went missing the prior September.

If you’re wondering whether feet washing up on beaches on this particular coastline is a thing, well, it is. It’s been a source of fascination for Canadians, Americans, and the media for years, and has its own Wikipedia page. The British Columbia Coroners Service, the people you call if you happen upon a disembodied foot, even updated this handy map:

Though morbid and grisly, there is nothing sinister about these finds, according to scientists and health officials. They aren’t the handiwork of a serial killer or the remains of plane crash victims, as some have proposed. Instead, several innocent scientific phenomena converge to periodically deposit human feet on the shores of the Salish Sea, the body of water between Vancouver and Seattle that includes Puget Sound and the Strait of Georgia.

That’s why officials on both the US and Canadian sides of the border are pretty blasé about the whole thing.

“The BC [British Columbia] Coroners Service has been able to identify eight of the previous 12 feet, belonging to six individuals,” the agency said in a statement. “In none of the cases was any foul play involved.”

For starters, there are simply a lot of corpses in these waters. Kathy Taylor, a forensic anthropologist at the King County Medical Examiner’s Office, which has jurisdiction along the Seattle-Tacoma coast of Puget Sound, explained that this is a consequence of having a densely populated area on the coast. The metro area along the shores of the Salish Sea is home to 7 million people.

Suicides and drownings are somewhat regular events around any body of water, and as shoreline populations go up, the number of water mishaps also increases. In fact, New York City regularly goes through the grim ritual of fishing floating corpses out of the water in the spring as water temperatures rise.

As for why body parts so often end up on the shores of the Salish Sea and not around other metro areas bordering water, like the San Francisco Bay Area, Parker MacCready, an oceanography professor at the University of Washington, said the story is simple. “Things that float at the ocean surface move with the currents, but also are pushed a bit by the wind, and this can be significant in getting them to shore,” he wrote in an email. “The prevailing winds here [around the Salish Sea] are west to east, and so floating stuff in this part of the Pacific gets blown to the coast effectively.”

We’ve seen this happen occasionally in other parts of the world too: Body parts including a foot washed up in Rio de Janeiro, near the beach volleyball courts before the 2016 Olympics. Body parts of tourists also washed up on a beach in Fiji in 2016.

And why feet?

It turns out that in water, human bodies naturally disarticulate, or come apart at the joints, so hands and feet often disconnect from corpses after soaking in the ocean for a while.

“Feet easily disarticulate and when they are attached to a flotation device such as a running shoe, they are easily washed ashore,” wrote Gail Anderson, co-director of the Center for Forensic Research at Simon Fraser University in British Columbia, in an email. “Notice there are no feet washing ashore in stiletto heels or flip-flops. Also, today’s running shoes are much more buoyant than in the past.”

Tennis shoes also keep decaying feet in a neat package rather than letting toes and heels disperse, and footwear protects feet from hungry sea creatures, which end up gnawing on other exposed areas like ankles instead.

“[A]rthropods will skeletonize and disarticulate a body quite quickly depending on oceanic conditions,” Anderson wrote.

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Anderson found this out in a 2016 study using pig carcasses immersed in the Salish Sea to approximate a human body. Previous studies reported that a corpse could survive for weeks, even months, intact underwater. However, Anderson concluded that the well-oxygenated waters of the Strait of Georgia support a vast amount of aquatic life that in turn could skeletonize a carcass in less than four days.

Though shoes keep feet together, tracing them to their original owners has proven difficult.

“The ones I have seen are not fresh feet,” King County’s Taylor said dryly. “They’ve been in the water for a long time, with significant decomposition.”

Often, DNA is too damaged to test from the days or weeks spent in salt water, and usually there is nothing to compare the DNA to since most of the people whose final resting place is in the water don’t have genetic material on record. Other potentially identifying marks like scars and tattoos are lost to the briny deep, as scarcely more than bone and ribbons of flesh return to shore.

Taylor said she is advocating for shoe size to be included in standard missing person reports, a detail that could help identify the next foot that turns up.

As for why we’re noticing more reports of these feet on beaches, Taylor said it’s partly due to the media keeping people on their toes, so now beachgoers investigate whether a lone sneaker has a foot in it.

“The reason it’s become a phenomenon is it’s gotten a lot of press,” she said. “Now people are checking.”

And of course, we in the media gleefully jump in with both feet when a story like this crops up. Officials say that people who encounter human remains should contact the police or the local coroner’s office before touching them.

Sourse: vox.com

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