Suspected Russian sonobuoy discovered off Pembrokeshire coast A submarine expert says he is "confident" the recovered object is an imploded Russian sonobuoy.

who discovered the object, initially assumed the device was part of a navigational marker, but later suspected it resembled a sonobuoy - an acoustic monitoring device, used to detect submarines.

#NARC head, #Dave_Kennard, described the device as "battered," measuring roughly 1.2m in length and