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Jason Goldman, Thailand, Wales discussed on 60-Second Science

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2 years ago

Automatic TRANSCRIPT

This is scientific americans sixty seconds science i'm jason goldman all they lean whales eat by opening their gigantic mas lunging forward in the water at engulfing gallons of sea water in their mouths they strain the seawater back through their balian plates trapping vast numbers of tiny creditors fish krill and others that then get swallowed all at once the species that share this method include what are called the roar kohlwelles which include fin whales sales blue whales and humpback whales but now a team of japanese in thai researchers has discovered a never before seen type of feeding behavior in iraq war called a brutus wale these whales don't bother with a lunch they simply open their miles of the surface and let the sea water flow in before straining and expelling the sea water through their bailey in as usual the researchers call it tread water feeding because of the way the whales gently undulated their tales to keep their heads near the surface of the water they saved the first passive feeding strategy ever seen in a baleen whale the team led by takashi awassa from the university of tokyo observed thirty one different whales feed this way in the gulf of thailand tread water feeding is more energy efficient than one treating since the whales just have to bob there has near the surface but you wanna things that the odd behavior may have a darker origin the upper gulf of thailand is i pox thick is a serious lack of oxygen dissolved in the water thanks mostly to sewage that flows into the sea from nearby rivers the low oxygen levels might force the whales pray towards the surface where oxygen is a bit more plentiful and if all the food is in one spot then tread water feeding might be the only way to get enough nutrition which means that these wales apparently improvise and improved strategy for survival in their polluted habitat you want a wrote in an email that his team witnessed tread water feeding most often in adult calf pairs that observation leads him to suspect at the behaviour might be socially learned fast from parents to their offs.