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DescriptionHubbs’s beaked whale is another little-known species. Beaks of squids and otoliths (inner ear particles) of some deepwater fish, some of which could have come from the stomachs of the squids, were found in the stomachs of a few stranded individuals in California. Scars on the skin have been noted, and may be evidence that males fight each other. The jaws of this species may be adapted to fighting: they are made of very compact bone, denser than any other mammalian tissues, including teeth. In North American populations, females are thought to calve in mid-summer, but little is known about reproduction in this species.
Mammal Species of the World