By my best estimation, there were whales audible, the most I have ever heard at one time. To learn more about the humpback whales of the Silver Bank and how to experience their song for yourself, visit www. This is still one of my favorite recordings due to the sheer number of singers you can hear. When I first posted the recording I guessed whale but after listening to it a few more times I think it is many more than that and impossible to really tell.
The males were recorded as they sang in the waters off the Hawaiian islands of Maui, Lanai, Molokai, and Kahoolawe during their winter mating season. A swimmer carried the camera in one hand and in the other hand carried a sonar device, which measured the distance from the camera to the whale.
The scientists found that the whales varied in length from Using The team has been following individual humpbacks which are identified by the unique markings on their tail flukes for decades, and its analysis also showed that some individual males have been singing for 17 to 20 years. During the winter months in Hawaii, the male humpbacks assemble in areas that the researchers call arenas, where the males sing and compete for females.
Typically, the singers are widely dispersed around their arenas, which may help amp up the reach of the chorus. Males also sing in other social situations, such as while escorting a female humpback and her calf see video.
When chorusing at the arenas, immature and mature whales are engaged in an unintentional mutual benefits game, Herman and his colleagues argue. These school kids are much harder to spot, though, which is where that buoy comes in. Floating near the shipping lanes of the Santa Barbara Channel, the buoy is attached to an underwater microphone, known as a hydrophone, positioned meters deep on the seafloor. When the hydrophone hears a whale song, it sends that data up a line to the buoy, which transmits the signal to scientists on land.
Think about sheet music: The notes and other symbols are a distillation of the extremely complex sounds of the orchestra, but musicians can still read and play them. A small computer in the instrument contains a database of whale calls, so it can take an educated guess at which species it might be hearing.
And the analyst is damn good at it, nailing just about percent of the species identifications during tests as the team evaluated their instrument in the real world. But why not just fully automate the system and let the instrument do all the identifying? You probably don't want to have a fully automated system, because if they did it wrong, there are big consequences.
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