Predictions the USA

[M Kfivethousand]

“Now the vibration enters the fatty organ that gives sonar-enabled whales and dolphins that high, rounded outer forehead. Aptly called the melon in dolphins, this organ uses lipids of different densities as sound lenses. The energy travels through the oil-filled “spermaceti” organ that is most of the upper part of this whale’s head. It reflects off an air sac immediately in front of the great bony dishlike front of the whale’s skull. The sound then passes through a series of acoustic lenses in the lower half of the whale’s vast bulb of a head, which is a gigantic sound-amplifying system. This series of reflections and focusings of the vibrational energy amplifies and sharpens the click. (Whale hunters, wholly ignorant of any of this and unable to find much profit in these astonishing sound-amplifying lenses, called this anatomical region “the junk.”) What emits through the skin at the forefront of the whale’s head is a weapon of sound. These are sharp broadband clicks with energy between 5 and 25 kilohertz.”

Excerpt From
Becoming Wild
Carl Safina

[M Kfivethousand]

Post by M Kfivethousand
“Now the vibration enters the fatty organ that gives sonar-enabled whales and dolphins that high, rounded outer forehead. Aptly called the melon in dolphins, this organ uses lipids of different densities as sound lenses. The energy travels through the oil-filled “spermaceti” organ that is most of the upper part of this whale’s head. It reflects off an air sac immediately in front of the great bony dishlike front of the whale’s skull. The sound then passes through a series of acoustic lenses in the lower half of the whale’s vast bulb of a head, which is a gigantic sound-amplifying system. This series of reflections and focusings of the vibrational energy amplifies and sharpens the click. (Whale hunters, wholly ignorant of any of this and unable to find much profit in these astonishing sound-amplifying lenses, called this anatomical region “the junk.”) What emits through the skin at the forefront of the whale’s head is a weapon of sound. These are sharp broadband clicks with energy between 5 and 25 kilohertz.”
Excerpt From
Becoming Wild
Carl Safina

“Leviathan inhabits—and creates—a world of sound. Almost constantly, whales hear the sounds of dolphins, of other whales, and of their own family. Almost constantly while they are deep underwater, they generate and listen to sonar clicks.
Jacques Cousteau famously titled his 1953 book The Silent World. It’s an evocative turn of phrase—but far off the mark. The sea shimmers with callings and affirmations. Warnings. Hellos. Yearnings of love-desire. Tribal chants. Engines, pneumatic air guns, and the thrumming of what’s coming. Since water is eight hundred times denser than air, sound travels four times faster through it, making water a superb medium of communication. That’s why so many animals, from shrimp to whales, have developed ways to make the sea transmit their aural messages. Some—pistol shrimp, mantis shrimp, possibly certain dolphins—may use sound as stun guns. Because water densities vary widely with vertical bands of layered temperatures and salinities, oceans become acoustical transmission systems allowing properly tuned sound to reflect across layers of seawater and travel longer distances, a bit as radio transmissions can travel farther by going from one repeater tower to another. That’s how blue and fin whales, booming at the lowest[…]”

Excerpt From
Becoming Wild
Carl Safina