https://allfishes.org/dictionary-of-ichthyology/bipolar-species
Bipolar species - toothed whales, anchovies, sardines, herring sharks, crustaceans, molluscs and...
Bipolar species - geography, the distribution of living organisms in which the same species (genus) occurs in the cold and temperate latitudes of both...
toothed whalesbipolarspeciesanchovies
https://www.popsci.com/environment/whales-vocal-fry/
Vocal fry helps toothed whales echolocate | Popular Science
While hunting in deep and murky waters, they use short, powerful, ultrasonic echolocation clicks to find, follow, and catch their prey.
vocal frytoothed whaleshelpspopularscience