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
Tyson Fury is the new heavyweight champion of the world, so who will he face next?
World leaders are gathering in Paris for a UN climate change summit aimed at securing a global deal on limiting greenhouse gas emissions
More than 300,000 people have now signed a petition calling for tougher penalties for those who abuse animals.