A humpback whale and 23 pilot whales are dead after stranding themselves on a remote beach in a Victorian national park.
Four more pilot whales were clinging to life on Tuesday evening, according to authorities.
A member of the public reported the beaching at Croajingolong National Park in East Gippsland to the Department of Environment Land Water and Planning about 4pm on Tuesday afternoon.
"There's suggestions the humpback whale might be from a different event, that's the suggestion from the people on the site yesterday" Incident Controller Michael Turner said.
"The humpback is dead and of the 27 pilot whales, four are still alive but they were in very poor condition when our people left the site last night.
"They don't hold much hope for them overnight, so I guess this morning we'll fly the vet in and a couple of specialists and we'll do an assessment on those four remaining pilot whales."
Mr Turner said the whales would probably be euthanised if their condition had not improved.