The astonishing choreography of humpback whales alimentation has been filmed via drone .
Humpbacks are baleen giant , so they feed in on little Pisces and crustaceans , rather than on larger quarry like erose whales . During their feed season in high parallel waters they eat up to two tonnes a daytime to bolster their consistence weight for the recollective migration to the mating grounds , where there is much less food for thought . The estimated 1.5 million calories in this dieting is equal to anaverage homo ’s intake over two yr .
As wereported last week , humpback eating demeanor has been discovered to be unusually complex , working together to corral quarry in three dimensions in the depths . The control surface teamwork seen here is in some way easier , since the air stand for they do n’t require to block the escape routes of the Pisces they are give on in one centering , but the class of undertaking is olympian .
The process seen here is forebode bubble - internet feeding and has been known to involve chemical group as big as 20 . It requires individual whales totake on specific roles . Several circle the prey , herding them together . One relinquish a strand of bubbles from its vent to make a roadblock through which the small Pisces can not easy pass . Another creates a series ofastonishingly loud racket . The fish react by forming into tight chunk – presumably an adaptive response in the boldness of some predators , but one that just makes things well-heeled for the whale .
The heavyweight lunge from below , drive the fish to the airfoil , which allows the huntsman to scarf up the Pisces , with a generous dot of piss as well . To avoid taking in too much salt water the whale force their take out through the baleen plate , leaving the Pisces pressed against the baleen screen so they can be clobber off . Seagulls , aware that there will be scraps , hone in on group of whale getting ready to hunt down in this way .
The behavior has been image many times , and it has been observed that the whale always come out in the same spot proportional to other members of their eating troupe . However , the footage below , taken byAkXproin Prince William Sound , Alaska , represent a new level of clarity in discover the coordination involved .
H / TTakepart
