Use military technology to track green whales

Australian scientists are using military technology to locate submarines to track rare blue whales at a distance of hundreds of kilometers.

Blue whales can communicate with each other throughout the watershed by transmitting low-frequency sounds, or "blue whale songs."

This year, scientists at the Australian Antarctic Unit have begun using acoustic buoys to track the blue whales, by tracking the sound they emit.

Blue whale is famous for mysterious on the ocean

The ultimate goal is to estimate the number of blue whales on the high seas, Reuters quoted senior researcher Mike Double as saying.

For more than 20 days, experts recorded 103 signals of blue whales in the sea area of more than 10,000 km ² with the technology.

Double size, up to 33 meters in size, scientists say, the blue whale is difficult to pin down in the vast ocean, and humans hardly know much about it.

The Australian government hopes the new approach will significantly improve the ability to track the world's largest creature in the icy southern sea, with the aim of preventing the extinction of blue whales.

The blue whale was almost swept across the oceans in the early 1900s, when 250,000 individuals entered the field of the world's fishing industry.