The device is thought to date back to World War II
Army divers have recovered an old mortar bomb from a Cumbrian lake.
The device was found in about 9ft (3m) of water in the Bowness Bay area of Windermere by local divers on a night exercise on Thursday.
Police were alerted, and a Royal Engineers diving team from Cambridge attended the scene on Friday and brought it ashore.
They confirmed that the shell, which is believed to date back to World War II, was harmless.
It has now been removed for safe disposal.
A spokeswoman for the Engineers Regiment said: "The diver did the right thing in contacting the relevant authorities.
"We responded immediately, the item was retrieved, and everything now is back to normal."