Sound Production
Air sacs just below the blowhole allow whales to produce sounds for communication and (for those species capable of it) echolocation. These air sacs are filled with air, which is then released again to produce sound in a similar fashion to releasing air from a balloon.
Read more about this topic: Blowhole (anatomy)
Famous quotes containing the words sound and/or production:
“There have been many stories told about the bottom, or rather no bottom, of this pond, which certainly had no foundation for themselves. It is remarkable how long men will believe in the bottomlessness of a pond without taking the trouble to sound it.”
—Henry David Thoreau (1817–1862)
“... this dream that men shall cease to waste strength in competition and shall come to pool their powers of production is coming to pass all over the earth.”
—Jane Addams (1860–1935)