 A pod of nearly 80 pilot whales has died after washing ashore on a beach in Orkney off the north coast of Scotland. Twelve of the whales were still alive when rescuers arrived, but the decision was taken to euthanise them after refloating efforts failed. Experts say it's likely that one of the whales got into trouble and the others tried to help. Molly Brown is from the British Divers Marine Life Rescue.