Another mysterious foot has washed up on a shoreline in B.C., in the 13th such discovery in the last 9 years.

Hikers found the foot Sunday, on Botanical Beach on the west coast of Vancouver Island. It was still wearing a sock and a running shoe.

Since 2007, thirteen feet have been found washed up on B.C. shorelines including at False Creek, Richmond and the Gulf Islands.

The bizarre discoveries have spawned many theories about where the feet might be coming from.

However, scientists believe they already know what's happening. Through missing person reports and DNA testing, 10 of the washed-up feet have been identified as belonging to individuals who died by suicide or accidents along the B.C. coastline.

Physical anthropologists say it might seem like a trend, only because the first few media reports of feet might have prompted people to be on the lookout for more.

"It does happen on other coastlines around the world. It's not unusual," anthropologist Lynne Bell told CTV Vancouver in an August 2010 interview.

The B.C. Coroners Service is already working with the RCMP's missing persons unit, to see if they can match the latest foot to a missing individual.

With files from CTV Vancouver