Data exists for well-documented series of adults of two species from Californian waters. In the short-beaked species, males were 172-201 cm long (n = 28) and females were 164-193 cm (n = 37) vs 202-235 (n = 15), and 193-224 cm (n = 10), respectively, for the long-beaked species. The short-beaked species ranged to about 200 kg and the long-beaked species to about 235 kg. However, this pattern of differential size may not hold globally; a geographic form of the short-beaked species in the eastern tropical Pacific ranges in length to 235 cm, as large as the long-beaked species in California waters.