Experts from Plymouth University have confirmed that the pollutant harming hundreds of seabirds off the westcountry coastline is polyisobutene (PIB). It's the same substance that affected large numbers of birds in February.
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The number of dolphins and porpoises found washed up on the beaches of Cornwall and the Isles of Scilly has dramatically increase.
A member of the public first contacted emergency services fearing two people were in distress and needed help.
The family of a woman who was killed in a crash with a tractor in Cornwall have set up a fundraising page to raise money for her funeral.