WATCH: Old WWII Bomb Detonated Underwater in Poland

World War II may have ended in 1945, but some of the old bombs remain. On Tuesday, the biggest WWII bomb ever found in Poland, which was a British bomb used by their Royal Air Force, exploded underwater as navy divers tried to defuse it.

More than 750 people had been evacuated from the area near the Piast Canal outside the town of Swinoujscie where the was found. It weighed 11,900 pounds, including nearly 5,300 pounds of explosive.

The spokesman of the 8th Coastal Defense Flotilla, Second-Lieutenant Grzegorz Lewandowski, told the state-run news agency PAP that the object can be considered as neutralized and all mine divers were outside the danger zone when it was detonated.

The Piast Canal connects the Baltic Sea with the Oder River on Poland's border with Germany. The bomb was dropped by the British RAF in 1945 in an attack on the German cruiser Lutzow.

Watch the explosion under water - and how it looked on the surface - here or below!