Recent observations of critically endangered North Pacific right whales ( Eubalaena japonica ) off the west coast of Canada

摘要

Background The eastern North Pacific population of right whale ( Eubalaena japonica ) is considered to be one of the smallest whale populations in the world and is at serious risk of extirpation. During the past century, there have been only six records of North Pacific right whales off the west coast of Canada. All six were taken by whaling operations, the last in 1951. Results Two independent and extremely rare sightings of North Pacific right whales were made off the coast of British Columbia, Canada, in 2013. We describe observations made of these two whales and include information on prey and genetic identity for one individual. Conclusions These sightings represent the first time this species has been confirmed in Canadian waters in 62?years, and likely the only time in the last 15?years that the species has been sighted south of the Kodiak Island area, Alaska, in the eastern North Pacific Ocean. It can be concluded that, although extremely rare, the species has not been extirpated from waters off Canada’s Pacific coast.