Pygmy sperm whale significant concentration of magnetite crystals, which suggests that "K. breviceps" can navigate by magnetoreception. Studies have also shown that compared to the sperm whale, the pygmy sperm whale brain has significantly fewer neurons, which may be connected to a decreased complexity in social interaction and group-based living. Like all toothed whales, the pygmy sperm whale hunts prey by echolocation. Sound produced for echolocation by many odontocetes come in the form of high frequency clicks. The frequencies it uses are mostly ultrasonic, peaking around 125 kHz. The clicks from their echolocation has been recorded to last an average of 600 microseconds.
Little Whale River Little Whale River The Little Whale River (French: "Petite rivière de la Baleine") (Cree: "Wâpamekustûss") is a river in Nunavik, Quebec, Canada. With an area of , it is ranked as the 35th largest river basin in Quebec. The Cree named a segment of the Little Whale River near its mouth as "Wapimakustus", which is similar to what Isbister noted in 1740. The Inuit call it "Qilalugarsiuviup Kuunga", which means "river or place where beluga is hunted". Its name has often been wrongly translated into French as "Rivière de la Petite Baleine". In the records of 1740 kept by Joseph