I love following different youtube channels that do detecting both here in the states and across the pond. In the states its usually for peoples lost rings or money and other objects. It's rare to find firearms, let alone WWII stuff but one guy has and I thought I would share it here. Not sure if this is the proper forum, if it has a better place please move it.
There is some newer stuff as in Uzi's and a suppressor, but also parts to a Sten including receiver tube, PPSH receiver, one Thompson receiver in very nice condition considering the years this stuff has likely been in the water as well as 3 lower frames to the same receiver and other parts and pieces.
Tons of speculation as to how things got there but no definitive answers of course, likely never will be.