Seal Sands
Before the heavy pollution of the Tees by industry, the flats at Seal Sands in the estuary were home to Common Seals and Grey Seals. For around 10 years these species were absent from the estuary due to pollution. But recently water quality has improved dramatically, and the seals can once again be seen in the estuary and on the flats at Seal Sands. The Seal Sands area is now designated as the Teesmouth National Nature Reserve.
Read more about this topic: River Tees
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