Sharks teeth ocean acidification climate change.

A group of German scientists tested the effects of a more acidic ocean on sharks’ teeth and found that future generations of sharks could have weaker teeth because of changing ocean chemistry. Ocean acidification is the ongoing decrease in pH of Earth’s oceans that scientists have linked to human activities including the burning of fossil fuels. The scientists found that sharks’ teeth could become structurally weaker and more likely to break as oceans become increasingly acidic. They say the ocean is expected to become 10 times more acidic by 2300. The scientists performed the study by collecting discarded teeth from sharks in an aquarium.