An undetonated World War II bomb has been found by two divers in Sydney Harbour.
Dive instructor Tony Strazzari was exploring around Jones Bay at Pyrmont with his friend Paul Szerenga on Wednesday morning when they stumbled upon the 40-50cm device in thick silt.
"I was just feeling around in the mud," Mr Strazzari told AAP on Thursday.
"I felt something very heavy and pulled it out, above the silt cloud and saw it was a bomb."Mr Strazzari said he had previously found bullets and a rifle but this week's discovery was the strangest yet.
"I could tell by the heaviness of it and the fins on the tail of it that it was some sort of bomb," he said.
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He carefully brought it to shore and waited with Mr Szerenga for police to arrive but he said he was not overly concerned about an explosion.
"Something could have triggered it, a heavy knock or something, but I thought it was best to call the experts," he said.
"The front piece of it has corroded and come off so it was just a spring sticking out the front."
Officers set up an exclusion zone near Pirrama Park as military personnel were called in to inspect the device.
"The item was deemed to be no risk to the public and seized by Australian Defence Force," a NSW Police spokeswoman said in a statement.
