Freshwater pearls facing extinction due to pollution in UK
There are only nine rivers in the north of England where the freshwater mussel survives, and two in the south of England, both in Devon.
Apr 11, 2017, 00:23 AM IST
There are only nine rivers in the north of England where the freshwater mussel survives, and two in the south of England, both in Devon.
Apr 11, 2017, 00:23 AM IST