OCEANS: Fish living in CO2-saturated waters lose ability to sense predators -- study Stephanie Paige Ogburn, E&E reporter Published: Monday, April 14, 2014 Climate change may end up turning smart fish into dumb ones. Please subscribe to ClimateWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.