Hi.
“Even Japan!”
I’m guessing the Yakuza.
5.56mm
..... LOL .... Actually it's The Kuroshio Current aka Japanese Current that carries debris such as from places like Fukashima Japan and deposits it upon the West Coast. The theory is that people lost at sea or even dumped in the ocean decompose and parts of the remains are carried by the currents and deposited on our Northwestern shores ..... especially in the Puget Sound area.