New Zealand conservation authorities said 240 pilot whales that were stranded overnight at a remote bay which only days earlier had a larger beaching refloated themselves on Sunday and were swimming offshore.
"We had 240 whales strand yesterday in the afternoon and we were fearful we were going to end up with 240 dead whales this morning," Herb Christophers, a Department of Conservation spokesman said.
"But they self-rescued, in other words the tide came in and they were able to float off and swim out to sea."