Mystery as remains of seven-arm deep-sea octopus wash up on beach

What appeared to be tentacles washed up on an Aberdeenshire beach are the remains of a deep-sea creature called a seven-arm octopus, say experts.

A local member of the public spotted the arms with rows of suckers at Forvie National Nature Reserve at Collieston, near Ellon, on Sunday and alerted reserve staff.

Detective work led to the animal being identified as one of the world's largest species of octopus - although experts remain puzzled about how it washed up on the beach.