AFP通信のインスタグラム(afpphoto) - 1月29日 08時35分

AFP Photo ? @olivier.morin - Climate change pushing Orcas to migrate north -
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Paying no attention to nearby divers, a killer whale and her calf hunting for food frolic in a snowy Norwegian fjord.
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Their favourite meal, herring, abounds, but climate change means both predator and prey must increasingly migrate further north.
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The clear and calm waters of Reisafjorden, in Norway's Far North, have in recent years become the winter playground of the Scandinavian country's killer whale population.
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At three degrees Celsius (37 Fahrenheit), the cold water is perfect for the herring which, ahead of the spawning season in February and March, have fattened up and make a tasty dish for the hungry killer whales, also known as orcas.
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As if they were performing an underwater ballet, the whales encircle a school of herring, forcing them up to the surface before slapping the water with their large tail fins to stun them.
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But in the past 20 years, the herring migrated 300 kilometres (190 miles) north, leaving the Lofoten Islands in search of waters that remain under six degrees Celsius -- the temperature required for them to reproduce.
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