Increasing levels of CO2 in the atmosphere are correlated withn higher level of acidity in our oceans, which has long been linked to the destruction of our coral reefs, but now even sharks are feeling the sting.
The Slow Disintegration of the Ocean's Apex Predators
Sharks' teeth are one of the most advanced weapons in nature, honed over millions of years of evolution, capable of slicing through bone. However, researchers have found that increased ocean acidity could be quite literally dissolving these deadly tools.
In an experiment in a lab, Natural History Museum researchers placed blacktip reef sharks in aquariums that replicated the ocean environment at the end of this century. Half of the sharks lived in current ocean pH levels, and half swam in water made slightly more acidic — the same levels scientists predict if carbon emissions continue unabated.
Sharks exposed to higher levels of acidity have brittler teeth, more cracks in the enamel, and the sharpness of their teeth dulls quicker than they can re-sharpen them.
I guess this should be no surprise given that coral reefs are essentially made up of bone, which isn't that different to teeth, so we already know that acidification can wear down relatively hard objects....
Final thoughts...
As oceans continue to acidify, even the hardiest monsters of the deep are finding themselves vulnerable.
It's a reminder that beneath the oceans climate change is having a more far reaching impact than you might think....
On the upside, if sharks ever grew legs at least now some of them will have less dangerous teeth!