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SAN FRANCISCO http://www.salehydroflaskcoffeemug.com/ , July 10 (Xinhua) -- With recording devices affixed to humpback whales, Stanford University researchers have observed the whales flapping their foreflippers like penguins or sea lions, completely unlike anything seen before in whales.


The unexpected novel movement, caught on video footage of the whales feeding in groups and detailed Monday in Current Biology, helps the researchers understand more about the abilities and anatomy of these mysterious animals and could also inform bio-inspired design.


"Whales power their swimming by using their muscular tails," said Paolo Segre Hydro Flask 24 OZ Sale , a postdoctoral researcher and lead author of the paper. "However, in this case we have documented the first example of a whale flapping its flippers to move forward, using a motion similar to a bird flapping its wings."


The foreflippers of humpbacks are bumpy and slender compared to the much shorter, smoother front flippers of other whales. They are so distinctive that the scientific name for humpback whales, Megaptera novaeangliae, means "big-winged New Englander." As their foreflippers were thought mainly involved in steering Hydro Flask 32 OZ Sale , it makes sense that the unusual flipper shape could explain the humpback's skillful maneuvering.


Video tagging technology, like that developed by the lab of Jeremy Goldbogen, an assistant professor of biology at Stanford, is relatively new, so researchers have only recently had the opportunity to test and expand on this hypothesis.


Goldbogen, senior author of the paper Hydro Flask 40 OZ Sale , carries out his research at Hopkins Marine Station. Co-authors of the paper include researchers from the Department of Environmental Affairs in Cape Town, South Africa, and from Cape Peninsula University of Technology in Cape Town.


"In the past, researchers have looked at the structure of the whale flipper from dead animals," Goldbogen was quoted as explaining in a news release from Stanford. "But for the first time we can see how this structure actually is used in a living whale -- in its natural environment."


From their footage, the group estimated the hydrodynamic forces produced by the flapping and found the whales were generating a significant amount of thrust. In addition Hydro Flask 12 OZ Sale , they found this behavior was extremely rare. In hundreds of hours of video, some of which included groups of about 200 whales, they saw the foreflipper flapping twice, which may be why they're the first to report it.


"It is likely very energetically expensive and only used for short bursts of acceleration," said Segre. "It is probable that humpback whales are the only species that can do this because of the length and extensive range of motion of their flippers."


The group's next step is to create a 3-D movement and 360-degree panoramic video version of their tag that would capture a whale's entire body along with the environment around it.


"By understanding how the body flexes, and how the flippers and flukes are used to maneuver Hydro Flask Sale Online , we will have a better understanding of the mechanisms used by the largest animals to attain high-performance locomotion," said Goldbogen. "Therefore, our research has implications for the biomimetic design applications from enhanced performance of animals to mechanized submersibles."


Research vessel "the Kexue" leaves port in China's Qingdao


Aerial photos show Hukou Waterfall of Yellow River


Shelter forest protects desert highway from intrusion of sand in Xinjiang


Taiwan's 1st unmanned bus starts test run in Taipei


Weekly choices of Xinhua photo


China's Qinghai Hoh Xil enters world heritage list as natural site


Chinese aircraft carrier formation arrives in HK, to open for public to visit


Main structure of Hong Kong-Zhuhai-Macao Bridge finished


HURGHADA, Egypt, July 15 (Xinhua) -- Egyptian police on Saturday probed the motive of the attacker who killed two people and wounded four others at a Red Sea beach resort Cheap Hydro Flask Sale , the judicial sources said.


Judicial sources added the attacker confessed to sharing the ideology of the Islamic State jihadist group, although there was no IS claim of responsibility.


The sources said the suspect is a 28-year-old from Kafr al-Sheikh province in the Nile Delta, north of Cairo.


The streets of Hurghada were being heavily patrolled and security stepped up outside hotels on Saturday.


"After killing two German women, he ran towards our hotel. He was shouting that he was not after Egyptians, and some Egyptians intervened to stop him," said a local shop owner.


Among the four others wounded were two Armenian women and a woman from the Czech Republic Hydro Flask Coffee Mug Sale , according to authorities in those countries.


It was not the first attack in Hurghada. In January 2016, three tourists were wounded in a stabbing assault in the resort by two assailants with apparent IS sympathies.


Hurghada is one of Egypt's most popular beach resorts, especially with Ukrainians and other European tourists.


In pics: China's CH-5 drone completes trial flight


Juzizhou scenic spot reopens after rain-triggered flood in China's Changsha


Tourists walk on plank road built on cliff at Huashan Mountain


Lotus flowers bloom at Liuzhou Expo Garden in SW China's Guangxi


Chinese aircraft carrier formation conducts coordination training


Lotus flowers blossom at ancient town in SW China


Aerial photos show Hukou Waterfall of Yellow River


Special treat to cool off animals at Beijing Zoo


By Olatunji Saliu


ABUJA, July 7 (Xinhua) -- For Joseph Gajere, a Nigerian ceramist for more than two decades, a trip to China has redefined the craft from being a "walk of life" to a "way of life."


Gajere was one of 50 potters selected from different developing countries to learn ceramic designs and methods in China last year.


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