The walrus pictured above would never have come, even strayed, into British waters. It's far too south from its natural habitat. However, what is probably a young male, below, was spotted on North Ronaldsay by the Observatory's assistant bird warden Mark Warren. The Orkney island's shoreline is renowned for its seaweed-eating sheep and the sighting of this visitor from the Arctic Ocean is extremely rare. Read the BBC's report on the event.
Scottish Islands Explorer - not that rare in North Ronaldsay