The 500 pound World War Two device was picked up during dredging work.
American Lobster Turns Up In Portsmouth!
Marine experts at an aquarium in Portsmouth are looking after an American lobster hauled up in the English Channel - thousands of miles from its natural home.
The rare Atlantic lobster was discovered in the pots of a local fisherman and taken to Portsmouth fish and shellfish merchants Viviers who realised its rarity and contacted staff at the Blue Reef Aquarium in Southsea.
American lobsters are much larger and more powerful than their European cousins and fisheries experts fear they may pose a potential threat to native stocks.
Blue Reef’s Lindsay Holloway said: “You can count the numbers of American lobsters reported in UK waters on the fingers of one hand and, when you consider the number of creatures caught each year, it’s a very unusual find.”
“Apparently this particular specimen was found inside a cuttlefish pot.
“He’s completely different from our native species with much larger claws and a generally larger body and thicker shell.
“No one is quite sure how he found his way into British waters. The most popular theories are that he may have been thrown overboard, discharged with a ship’s ballast or even managed to escape from the galley of a passing cruise liner.
“I have heard reports of another specimen being caught in the South West but they would appear to be isolated cases,” he added.
The heaviest recorded crustacean is an Atlantic lobster landed in 1977 in Novia Scotia, Canada and tipped the scales at just over 20kg.
Experts estimated that the animal was well over 50 years old and believe that some specimens may even live to be 100.
The record distance travelled under its own steam by a lobster is 225 miles.
640 men were killed when the South African troop carrier was hit by a cargo ship in 1917.
The 79-year-old man suffered a serious head injury in the Cranmer Road car park in Winton.
Two Girls Indecently Assaulted Last Sunday
Recently Played Tracks
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart.
Get some great ideas on how to advertise your business on radio, online and on mobile.