Thor the disoriented walrus enthralled Brits, but cut no ice with climate sceptics | Robin McKie

Warming seas almost certainly prompted the huge mammal's wanderings, even if deniers claim all is well in the Arctic

As migrant arrivals go, the appearance of Thor the Walrus in British waters last week was encouraging. Thousands flocked to greet the huge mammal as he meandered up England's east coast after his arrival in Hampshire in December.

Subsequent stopovers included Scarborough, where the local council cancelled New Year's Eve celebrations so they did not frighten Thor, who gratefully responded by masturbating. Then he moved on to Blyth, in Northumberland, before heading home to the Arctic.

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