its a phenomen call:echo location" quite commun on whales and dolphins the southern ocean ought to be a safe haven for whales swimming in the latitudes of the roaring forties below the the mainland coast of australia.there is a huge whales santuary here that extends from latitude 40 south to the antartic.it provides the whales with theoretical protection fromn the world's commercial whaling fleet.yet whales continue to die premutarely en masse in thes latitudes ,stranded in family groups along isolated beaches in south africa new zealand and australia,they navigates by sonaar system.look for more in fo on "cetacean echolocation.
150 PILOT WHALES have died after becoming stranded on a remote beach off Tasmania, Australia.
About 150 whales have died after being stranded in a remote coastal area of the Australian island of Tasmania.
Many of the long-finned pilot whales, which were discovered on Saturday, had been badly injured by jagged rocks.
Rescuers did manage to shepherd about 30 whales trapped in shallow reefs to safety using a small boat, an official said.
Whales pass Tasmania as they migrate to and from Antarctic waters and stranding is not uncommon.
Last week 11 whales were rescued after more than 60 became stranded off another part of the island.
Local residents and experts had worked to help this group of whales, stranded near Sandy Cape in north-west Tasmania, but most had been injured by rocks and reefs



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