Rescuers gave up hope Sunday of saving the last survivor of 45 sperm whales that became stranded on a remote Australian sandbar, as it lay hemmed in by the bodies of its family group.
"We are administering palliative care," said Chris Athur, a spokesman for the Parks and Wildlife Service in Tasmania state, as the animal's chances of survival dimmed.
The whales became stuck on a sandbar just off the island state's northwest coast on Thursday. Officials rushed to the site to help at least seven survivors by pouring water over the semi-submerged mammals to keep them cool as they tried to devise a plan to free them.
But survivor numbers have dwindled each day. Arthur said just one remained alive Sunday, but it was trapped behind several other dead ones.
The animals - the largest up to 60 feet (18 meters) long and weighing up to 22 U.S. tons (20 tons) each - were too heavy to lift free of the sandbar, Arthur said.
Ironically, the thick blubber that insulates the animals when ones.
The animals - the largest up to 60 feet (18 meters) long and weighing up to 22 U.S. tons (20 tons) each - were too heavy to lift free of the sandbar, Arthur said.
Ironically, the thick blubber that insulates the animals when they swim in deep Antarctic waters has posed one of the greatest dangers.
"The blubber, which is a real asset to them in the deep cold waters, just really makes them heat up quickly," Warwick Brennan, another wildlife services spokesman, told Australian Broadcasting Corp. radio.
Strandings happen periodically in Tasmania, where whales pass during their migration to and from Antarctic waters.
Scientists do not know why the creatures get stranded, but they suspect in this case that rough conditions in the narrow channel between the island and the mainland had churned up sediment in the water and confused the pod's sonar navigation.
Last November, 150 long-finned pilot whales died after beaching on a rocky coastline in Tasmania despite frantic efforts to save them. A week earlier, rescuers saved 11 pilot whales among a pod of 60 that had beached on the island state.
Sperm whales become stranded less often than other species because they spend most of their time in deep waters, away from the coastline. But scientists say ocean currents and feed stocks have brought them closer to shore.
Officials have said the carcasses would be left in place to rot or be eaten by scavengers.
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