A massive mine has been blown up off Swanage Bay shaking the town and sending a jet of water 30ft into the air.

The 600lb World War Two mine was detonated at 12.30pm today by Navy bomb disposal experts.

It sent a 30ft plume of water into the air and shook the ground under the town.

The device was discovered by divers a kilometre east of Ballard Point on Tuesday. They photographed it alerted the coastguard.

Today a 1,000km exclusion zone was put in place and coastguard teams from Swanage and St Alban's cleared the public from Ballard Point. Police RIBs were deployed to maintain the zone at sea. The device was then detonated in a controlled explosion.