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Tha an t-eisir airson ar n-ionnsachadh air mar a bhios iad a' dìon a' chosta agus mar a tha balla nan eisir cudromach gus èisg eile a bhiadhadh. Tha e cuideachd ag innse dhuinn mar a bhios iad a' cruthachadh neamhnaid – rud a tha prìseil do dhaoine.

The oyster teaches us about how they protect the coast and how oyster reefs help to feed other fish. He also tells us how a pearl forms, something which is very precious to humans.