California mussels. The shells of California mussels are being weakened by the acidification of the oceans which is due to climate change i.e. global warming which in turn is caused by carbon dioxide in the atmosphere which when absorbed by water acidifies it. Coral reefs are also being destroyed by global warming in a similar way.
Two useful tags. Click either to see the articles: Speciesism - 'them and us' | Cruelty - always shameful