Pubs are restaurants in the area of Portland are being asked to be vigilant after lobsters were stolen on the island.
It happened overnight between Sunday (5/5) and Monday (6/5) at Stone Pier in Castletown.
Offenders dragged a large lobster cage on to the beach and stole most of its contents.
Police Constable Sally Ludlow, of Portland Safer Neighbourhood Team, said: “The lobsters that were stolen are worth a substantial amount of money.
“I am appealing for anyone who witnessed this incident or saw any suspicious activity around the time in that area to come forward.
“In particular, I ask pub and restaurants in the area of Portland, Weymouth and Bridport to be vigilant and report to the police anyone selling lobsters and shellfish for unusually low prices.
The cruise liner Discovery was due to head to Norway but was diverted to Portland in Dorset when a routine inspection didn't quite go to plan. Bob Cruise takes up the story
The Maritime and Coastguard Agency has issued a statement following its inspection of the Discovery cruise liner in Portland, Dorset.
It says that the vessel will stay put until safety issues over drills and training have been addressed.
The Maritime and Coastguard Agency has told us that officials went on board the Discovery at the end of last week as part of a routine inspection, and found a number of issues with 'safety management systems'.
This related to crew familiarisation of the ship and training.
The MCA ordered that the vessel should remain in place until the owners had made a number of improvements.
Seven hundred passengers have been told that their cruise, a two-week trip around Norway, has been suddenly cancelled.
The Discovery was originally scheduled to sail from Avonmouth but, due to tidal restrictions, it was re-routed to Portland in Dorset at the end of last week.
24 coaches transferred all passengers to Portland but the Captain then informed everyone on board that the cruise could not go ahead due to 'technical reasons'.
Passengers will all receive a full refund and £250 compensation per person.
The firm says that Discovery should be ready for its next scheduled departure from Avonmouth on March 15th.
It was a race against time to gather them, clean them up and release them back into the wild. Duncan Sleightholme was on the shoreline in Dorset to see the birds depart. They were washed up after a major pollution incident.
They say lives will be lost if it's scrapped but today campaigners fighting to save the coastguard helicopter at Portland in Dorset were dealt a bitter blow.
Half the 18 coastguard co-ordination centres around the country - including Portland and Lee-on-the-Solent - are to close and are being replaced by a new national centre near Fareham. The re-orgnisation will also see the Dorset search and rescue helicopter axed in the next five years.
Hopes were raised after the Transport Select Committee called for public consultation about the plans. But, as Kerry Swain reports, the new Shipping Minister Stephen Hammond appeared to have made his mind up.
We also hear from Richard Drax, Conservative MP for South Dorset.
Campaigners fighting to save the search and rescue helicopter at Portland in Dorset have been dealt a major blow today.
Speaking during a visit to the new coastguard operations centre the Shipping Minister Stephen Hammond MP said he's convinced Government plans to close the base are safe.
This report from Kerry Swain.
VIDEO: They save lives every day - but now the Dorset Search and Rescue helicopter has been thrown a lifeline. The service was due to be axed in the next five years - but now questions are being asked about that decision. Martin Dowse reports.