There have been several reports detailing the growing problem with ocean acidity due to absorption of carbon dioxide from the air.
Now it is becoming clear that there is imminent danger to the ecosystem and the food chain, specifically in the Arctic, where increasing acidity in the water could dissolve the shells of shellfish within 10 years. This is according to an article in the Telegraph.
It says acidity in the oceans is rising faster than ever before in the past 65,000 years. Doesn't sound good at all.