Sharks are the most feared predators in the sea, and their survival hinges on fearsome teeth that regrow throughout their lives. But changes in the ocean's chemistry could put those weapons at risk.
That is the takeaway from a study performed by a group of German scientists who tested the effects of a more acidic ocean on sharks' teeth. Scientists have linked human activities including the burning of coal, oil and gas to the ongoing acidification of the ocean.
As oceans become increasingly acidic, sharks' teeth could become structurally weaker and more likely to break, the scientists found.
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