A British Divers Marine life spokesman said the whales that had died, had died naturally.
He said several whales were refloated by BDMLR volunteers, some turned back into the harbour and the rest were waiting at the harbour entrance.
The operation is ongoing, he added.
More top news
The EU will not hold talks with the UK until it triggers Article 50 to leave, Germany, France and Italy insist.
Jamie Oliver has launched an expletive-filled rant against Boris Johnson, calling on the public to ensure he does not become Prime Minister.
David Cameron has addressed Parliament for the first time since Britain voted to leave the European Union.