Thor the walrus filmed returning to the sea at Scarborough

Chris Cook, from the British Divers Marine Life Rescue charity, said: ‘It is extremely rare that an Arctic walrus should come ashore on the Yorkshire coast.’ Photograph: Ian Forsyth/Getty Images

A wandering Arctic walrus, who won the hearts of local residents and tourists, has been filmed returning to the sea in Scarborough.

The arrival on Saturday of the mammal, nicknamed Thor, to the North Yorkshire seaside town drew huge crowds keen to catch a glimpse of the creature.