Higher CO2 levels cause cone snails to lose their focus

Cone snails are normally stealthy hunters, but they become clumsy and unfocused in water with increased levels of carbon dioxide.

Oceans absorb CO2 from the atmosphere. As atmospheric CO2 levels rise, those in the oceans do too, changing the chemistry of the seawater.

Cone snails (Conus marmoreus) that spent several weeks in water dosed to simulate CO2 levels expected at the turn of the century had trouble catching their favorite snack, jumping snails. Only 10 percent caught …

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