Sound is the most efficient means of communicating underwater, especially for many marine species. NOAA Fisheries works to better understand how marine animals use sound and the potential impacts of man-made noise on the underwater environment.
Read more at fisheries.noaa.gov.

NOAA Fisheries studies marine animals by using a variety of technologies to record underwater ocean sounds. Marine animals live in a noisy habitat with combined noises from humans, nature, and other species. This conceptual illustration shows images of human, marine animal, and environmental sources of sound and approximately proportional sound waves. Credit: NOAA Fisheries.