This is depressing news, and I witnessed it yesterday at Saltburn just under the water as we walked on the pier. The tide was out today and revealed thousands of washed up razorclams, all dead obvs. It's happened before, die-offs caused by toxic waste dumped out at sea. Crabs, mussels, cockles, lobsters, starfish (I saw a dead one of those further up the beach - very poisonous so I kept H away), even the seal pups up the coast at Teesmouth have gone.