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The Eastern North Pacific blue whale tonal frequency is 31% lower than it was in the early 1960s. [16] [17] The frequency of pygmy blue whales in the Antarctic has steadily decreased at a rate of a few tenths of hertz per year since 2002. [18]
There are at least nine separate blue whale acoustic populations worldwide. [41] Over the last 50 years blue whales have changed the way they are singing. Calls are progressively getting lower in frequency. For example, the Australian pygmy blue whales are decreasing their mean call frequency rate at approximately 0.35 Hz/year. [42]
The 52-hertz whale, colloquially referred to as 52 Blue, is an individual whale of unidentified species that calls at the unusual frequency of 52 hertz. This pitch is at a higher frequency than that of the other whale species with migration patterns most closely resembling the 52-hertz whale's [ 1 ] – the blue whale (10 to 39 Hz) [ 2 ] and ...
“The blue whale is the largest and loudest animal on Earth.” The blue whale is the largest animal on Earth and likely the largest animal ever to have lived. While this ocean mammoth is dubbed ...
Blue whales produce some of the loudest and lowest frequency vocalizations in the animal kingdom, [26] and their inner ears appear well adapted for detecting low-frequency sounds. [100] The fundamental frequency for blue whale vocalizations ranges from 8 to 25 Hz. [101] Blue whale songs vary between populations. [102]
A study on the effects of certain sonar frequencies on blue whales was published in 2013. Mid-frequency (1–10 kHz) military sonars have been associated with lethal mass strandings of deep-diving toothed whales, but the effects on endangered baleen whale species were virtually unknown.
And that's true, but this is a blue whale, which is the largest animal to ever live on Earth. Blue whales can grow up to 100 feet long and weigh about 200 tons — that makes them bigger than ...
The pygmy blue whale is the only one of the three identifiable subspecies to be found regularly in tropical waters. It occurs from the sub-Antarctic zone to the southern Indian Ocean and southwestern Pacific Ocean, breeding in the Indian and South Atlantic oceans, and travelling south to above the Antarctic to feed, [4] [7] although they very rarely cross the Antarctic Convergence.