IUCN Red List Assessment
Red List Category Year Assessed
Critically Endangered Red List Criteria
Reilly, S.B., Bannister, J.L., Best, P.B., Brown, M., Brownell Jr., R.L., Butterworth, D.S., Clapham, P.J., Cooke, J., Donovan, G.P., Urbán, J. & Zerbini, A.N. Reviewer/s
Taylor, B.L. & Notarbartolo di Sciara, G. (Cetacean Red List Authority) Contributor/s Justification
Very little is known about this subpopulation except that it was once numerous off Chile
. Although no estimate of abundance exists for right whales in the waters off Chile
, the paucity of sightings over the past 50 years makes it very probable that the mature population size is below 50 individuals.