Salish Sea human foot discoveries - Since 2007, at least 20 detached human feet have been found on the coasts of the Salish Sea in Canada and US

"A known woman's left foot, in a shoe that was found floating in the Fraser River in Richmond.[11] The shoe was described as a small New Balance running shoe, possibly a woman's shoe.[27] A forensic DNA profiling analysis indicated that it was a genetic match to the foot discovered on May 22 on Kirkland Island.[32]"

So at least two feet are from the same person. I'm not saying this isn't horrible, but the headline of "20 feet" would suggest 20 different people.

This is sadly most likely stowaways that either fell off ships, or more horrifyingly, have been possibly tossed overboard after being discovered by crew.

The feet, being encased in a floatable material — shoes — eventually detach and float to shore.