Before revision: The 2021 North-East England shellfish die-off was a series of occasions where a mass of shellfish were found on beaches on the coasts of the North-East and Yorkshire in northern England, either dead, or in stages of dying.
After revision: The 2021 North-East England shellfish die-off was a series of occasions where a mass of shellfish were found on beaches on the Durham and Yorkshire Coasts in northern England, either dead, or in stages of dying.