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[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] One hypothesis is that as blue whale populations recover from whaling, this is increasing sexual selection pressure (i.e., lower frequency indicates larger body size). [17]
In 2009, researchers found that blue whale song has been deepening in its tonal frequency since the 1960s. [19] While noise pollution has increased ambient ocean noise by over 12 decibels since the mid-20th century, researcher Mark McDonald indicated that higher pitches would be expected if the whales were straining to be heard.
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 (Balaenoptera musculus) is a marine mammal and a baleen whale.Reaching a maximum confirmed length of 29.9 m (98 ft) and weighing up to 199 t (196 long tons; 219 short tons), it is the largest animal known ever to have existed.
An underwater photographer who got up close and personal with a massive blue whale says the experience left him feeling awestruck — and incredibly small. Stunning photo shows diver's close ...
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.
Roger Searle Payne (January 29, 1935 – June 10, 2023) was an American biologist and environmentalist famous for his 1967 discovery (with Scott McVay) of whale song among humpback whales. Payne later became an important figure in the worldwide campaign to end commercial whaling .
Toothed whales produce rapid bursts of high-frequency clicks that are thought to be primarily for echolocation, while the complex sounds of the humpback whale (and some blue whales) are believed to be primarily used in sexual selection. This young humpback whale is singing in the waters of Vavaʻu, Tonga. Credit: Sylke Rohrlach