The Humpback's nutrition
The Humpback whale, as all carnivore whales, feeds it self
with the krill, but also with small fishes. To eat, it goes to
the surface mouth wide open, and then it closes it's jaw fast
and strongly, then it gives back the ocean water trough it's "Fanons",
this way holding down the krill and the small fishes in it's mouth.
We can observe various interesting behaviors: one or more
individuals stay under a shoals of fish and krill.
They blow bubbles of air going upwards to the surface at the same time,
and forming smaller and smaller spirals, that way creating a bubble
curtain then it's only has to go up to the surface, and once up
there opening it's enormous mouth and swallowing the whole shoal.
The whales also make sounds to hold it's "food".
RECORD , AT ABROLHOS , IDENTIFICATION , BEHAVIOR , REPRODUCTION , THREATENED OR NOT? , CARAVELAS AND ABROLHOS , RAP