Majority of 230 whales stranded on beach in Tasmania die

Source: AAP

Only 35 of 230 stranded whales have survived on Tasmania's west coast as rescue and release efforts continue.

Whales stranded at Macquarie Harbour in Strahan, Tasmania.

Marine conservationists launched a rescue mission on Ocean Beach near Macquarie Harbour, south of Strahan, on Wednesday but incident controller, Brendan Clarke said tragically, most of the mammals died.

"We positioned them overnight, again so that we could assess them this morning, and those ones that have survived - which we've got approximately 35 surviving animals out on the beach - the primary focus this morning will be on the rescue and release of those animals," he told reporters on Thursday morning.

"Unfortunately, we do have a high mortality rate out on this particular stranding."

Clarke said the exposed conditions on Ocean Beach contributed to the high death rate.

The stranding is the second in a matter of days, after 14 dead sperm whales washed ashore at King Island on Monday.