Could climate change cause sharks to lose their bite?

Shark teeth are at risk of becoming more fragile as the world’s ocean acidify as a result of rising carbon dioxide levels.

That was the discovery made by researchers at Heinrich Heine University Düsseldorf who collected naturally discarded, intact teeth from the aquarium floor of a blacktip reef shark enclosure. They then incubated these teeth for eight weeks in two separate tanks, one with a pH of 8.1 representing current oceanic conditions and one with a pH of 7.3, corresponding to the predicted level for 2300.