| Almost nothing is known of the ginkgo-toothed beaked whale. Nothing about its behavior or feeding habits has been reported, and its geographical distribution is estimated from a very small sample. Most records are from Asian waters, where a few were harpooned in fisheries. As with other beaked whales, adult males can be identified by their distinctively-shaped teeth, which are different in each species, but females and juveniles are almost impossible to identify by species.
up to 4.8 m males; up to 4.9 m females
Nishiwaki and Kamiya, 1958. Sci. Rep. Whales Res. Inst. (Tokyo), 13:53, 13 figs., 17 pls.
Mammal Species of the World