Ocean acidification could shrink the brains of intelligent cephalopods

Ocean acidification may significantly reduce the brain size of intelligent cephalopods like squid. Researchers found that squid exposed to simulated ocean conditions of the year 2100 experienced a halving of their brain size, particularly in visual processing areas. This discovery, presented at a scientific conference, suggests a potential threat to the cognitive abilities of these marine animals due to increasing CO2 absorption by the oceans.