[ZenGum]

Alas, it is some rather dodgy cherrypicking by whoever wrote the neatorama article.

Ries and colleagues grew 18 different species of economically and ecologically important marine calcifiers (animals that make shells out of calcium carbonate) at various levels of CO2 predicted to occur over the next several centuries, the UNC statement explained. "When CO2 combines with water, it produces carbonic acid, raising the overall amount of carbon in seawater but reducing the amount of the carbonate ion used by organisms in their calcification."

Seven species (crabs, lobsters, shrimp, red and green calcifying algae, limpets and temperate urchins) calcified at a higher rate and increased in mass under elevated CO2. Ten types of organisms (including oysters, scallops, temperate corals and tube worms) had reduced calcification under elevated CO2, with several (hard and soft clams, conchs, periwinkles, whelks and tropical urchins) seeing their shells dissolve. One species (mussels) showed no response.

What, cherrypicking environmental research for an attention-grabbing headline? I would never have expected such shennanigans!