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.
Last Woman on Earth color-corrected 35 mm print and was released on DVD through Image Entertainment, featuring introductions by Corman, with commentary tracks by Jones-Moreland and Carbone. The release also features the other two films in Corman's "Puerto Rico Trilogy," "Creature from the Haunted Sea" and "Battle of Blood Island", shot back to back with "Last Woman". Last Woman on Earth Last Woman on Earth (often referred to as "The Last Woman On Earth", but it appeared without "The" in the film's actual title card) is a 1960 American science fiction film that was produced and directed by Roger Corman. It tells the story