by Dolphins in Australia have developed a unique and ingenious hunting technique that includes the use of sponges to rinse fish out of the sea floor.
This bottleneck pulls a sponge on your beak, which resembles a clinase and enables you to safely shovel through rocky sea floor channels. This method ensures the BARRED Sandperch and makes it a simple meal.
However, new research results published in the magazine Royal Society Open Science shows that this inherited behavior is more difficult than it seems.
The sponge disturbs protectively, disturbs the highly developed echolocation system of the dolphins, its main remedies for navigation and invention by sound.
A pocket -dolphin that carries a sponge in the nose to swim to feed food in Shark Bay, Australia, Australia (AP)
“It has a villain effect in the way a mask could,” said co-author Ellen Rose Jacobs, marine biologist at the University of Aarhus in Denmark. “Everything looks a bit strange, but they can still learn how to compensate.”
Jacobs used an underwater microphone to confirm that the “sponge” dolphins in Shark Bay, Australia, still used Echolocation clicks to guide them. Then it modeled the extent of the sound wave distortion from the sponges.
For the wild dolphins who have mastered the food search with nasal sponges, scientists say that this is a very efficient way to catch fish. The wild naval sponges vary from the size of a soft ball to a cantalae.
The sponge hunt is “like hunting when you are connected to your eyes, you have to be very good and very well trained to pull it off,” said Mauricio Cantor, a marine biologist at Oregon State University, who was not involved in the study.
The ability can take many years for all dolphins to stay with it (AP)
This difficulty could explain why it is rare – only about 5% of the Delphin population that the researchers examined in Shark Bay. That is a total of 30 dolphins, said Jacobs.
“It takes many years to learn these special hunting skills – not everyone sticks to it,” said marine ecologist Boris Worm at Dalhousie University in Canada, who was not involved in the study.
Delphinälber usually spend three or four years with their mothers, observe and learn important life skills.
The delicate art of sponge hunting is “only passed on by mother to descendants,” said Janet Mann, co-author and Georgetown Marine-Biologyin.
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