Thousands of dead fish turn Lake Erie beaches into a stinking mess9/5/2012
It's a good thing summer is coming to a close for Ontario residents, because the northern shores of Lake Erie have been taken over by tens of thousands of dead fish. Environmental authorities say the fish cover a 25-mile stretch of beach and could be the result of lake inversion, a phenomenon in which water temperatures in the lake drop. Cooler water has lower oxygen levels, so the fish suffocate. Some residents aren’t buying this explanation, claiming they were woken up by a strong sewage smell the night before the fish showed up on shore and believe a spill could be responsible. Officials who’ve tested the water say there’s no evidence of a spill or pollution. [Source]
What do you think is causing these fish to die?