A woman walking on the beach at Maryport found was is believed to be a lump of solidified palm oil.
Tests are now being carried out to find out what it is.
Allerdale Borough Council said it's the first incident it has come across involving the discovery of solidified palm oil on the beach.
The council want to reassure the public that this is an isolated incident and yesterdays discovery will be disposed of safely.
If the public spot something they believe is palm oil, they are advised to keep dogs away from it and report it to the customers services team at Allerdale Borough Council on 01900 702800.
The Environment Agency says a lump of allegedly solidified palm oil has been found washed up on Maryport beach. A member of the public made the disovery. The EA says it is working with the local authority to investigate further and arrange for a safe disposal.
If members of the public find similar material on the beach they should report it to the local authority environmental health department.
Similar discoveries have also been made on beaches in Dumfries and Galloway in recent weeks. The chalky white substance can be fatal to pets.
A Cumbrian nuclear dump site is 'virtually certain' to be eroded by rising sea levels, according to the Environment Agency.
A document seen by The Guardian newspaper says waste from the Drigg Low Level Waste Repository, near Sellafield, is going to start leaking on to the west Cumbrian shoreline in a few hundred to a few thousand years.
The operators of the site say it will take a thousand years to erode and claims that even if waste is exposed the impact will be 'very low'.
The Environment Agency is also reassuring people that it is currently safe.
Fish experts are concerned that stocks of our native species are declining in Cumbria's famous lakes - so the Environment Agency is trying a novel approach to protect them.
Protective shelters have been installed in Bassenthwaite Lake to help fish evade predators.
Patrol officers will use a remote controlled boat to help them check the shelters.
Matthew Taylor went to find out more.
The refuges protect growing fish from predators and will help the fish stocks in the area to increase.
It is the first time equipment like this has been used in the north of England.
The Environment Agency is revisiting a Cumbrian lake where hedgehog shaped refuges were installed last year to help protect fish stocks.
Bassenthwaite is the first English lake to use the spiky constructions which provide shelter and a safe haven from predators.
A remote control boat will help monitor how well they are working.
The Environment Agency say it may prosecute following a pollution incident in a beck in Wigton which has killed hundreds of fish.
Investigations are continuing into the source of the chemical leak, but they are focusing on the town's swimming pool, which has been closed while the inquiry continues.
Watch the full report from Hannah McNulty below.
The Environment Agency is educating young people on the causes of water pollution through a video that it hopes will go viral.
Crystal the Crab is the latest character to feature in a video outlining what can cause pollution in the sea.
Children at a Cumbrian school are learning about the causes of water pollution using an environment agency video.
Crystal the Crab will explain to youngsters at Allonby Primary School how things - like dog fouling and washing machines or toilets that are not properly plumbed - can pollute sea water.
Chemical spills which can harm wildlife and the environment should be contained more easily in future, following an agreement by Cumbria Fire Service and the Environment Agency.
They have teamed up to create an Environmental Protection Unit with specialist equipment based at Penrith.
Tim Backshall reports: