The overfishing of the oceans is contributing to global warming, scientists have found.
They have discovered that the ocean’s ability to absorb pollution and purify the atmosphere is influenced by an unexpected factor – fish droppings.
The increase in carbon dioxide in the atmosphere not only drives global warming, but also raises the amount of CO2 dissolved in ocean water, resulting in the sea becoming more acid and potentially a threat to sea life.
Alkaline chemicals such as calcium carbonate can help balance this acid and help to take carbon dioxide out of the atmosphere.
Scientists previously thought the main source for this balancing chemical was the shells of marine plankton, but they were puzzled by the unexpected quantities of carbonate in the top levels of the water.