The pilot whales were found on Wednesday aground on an exposed beach along the Tasmanian coast.
Rescue efforts are still ongoing to save the remaining whales.
“We were mainly focused this morning on actually getting in on that rescue operation and [the whales] released,” Brendon Clark of the Tasmanian Parks and Wildlife Service told the Australia Broadcasting Corporation on Thursday.
“We know that some of them can return to the beach on their own and so we’ll be monitoring that.”
Rescuers had previously estimated that about half of the whales were still alive.
It is the second mass stranding of whales in Tasmania this week after more than a dozen sperm whales, mostly young males and believed to be from the same cephalopod, were found. died on another beach.
The cases of whale stranding have puzzled marine scientists for decades.
Tasmania’s largest stranding was in 2020 when more than 450 pilot whales were found.