Canada (NB), China (mainland) (NB), Eastern Central Pacific (B) (NB), Guam (NB), Japan (B), Marshall Islands (NB), Mexico (NB), Micronesia [Federated States of] (NB), Northeast Pacific (NB), Northwest Pacific (B) (NB), Russia (Asian) (NB), South Korea (NB), Taiwan (China) (NB), United States Minor Outlying Islands (B), USA, Western Central Pacific (NB).
Vagrant to New Zealand.
Unknown to Northern Mariana Islands, Palau.
Western Hawaii; small numbers in Izu, Bonin and southern Ryukyu Is, to south of Japan.
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 120,000 (2010) and decreasing.