A series of controlled explosions has sunk a World War II US troop ship to create an artificial reef off Florida.

The General Hoyt S Vandenberg sank in less than two minutes after experts detonated explosives off Key West.

Officials hope the reef will attract divers, boosting the economy by $8m (£5m). They also say fish, coral and other marine life will be drawn to it.

The ship was last used by the US Air Force to track missiles and spacecraft.