Man-made CO2 affects ocean acoustics

There is little doubt among scientists now that human carbon dioxide emissions are warming the planet. Another problem of rising atmospheric carbon dioxide (CO2) is that CO2 is being absorbed by the oceans, which increases seawater acidity (lowers the seawater pH). This process, termed ‘ocean acidification’, has received growing scientific and public interest because it threatens certain groups of marine organisms, including corals. Only recently have researchers realized that man-made carbon dioxide not only warms and acidifies the ocean