How common were underwater mines in the ww2? Are there any left and still active today?
Underwater mines were extremely common in the Second World War, with the large majority of American and European ports being laid with mines as a form of protection against naval invasions. Mines were extremely damaging to enemy ships and were one of the biggest challenges faced by both sides in naval warfare and led to the sinking or damaging of thousands of ships throughout the war. Today almost all of these mines have been collected and safely detonated due to the fact that both sides diligently documented the location of mines placed in regions in order to avoid hitting them themselves.