Increased harbor porpoise mortality in the Pacific Northwest, USA: understanding when higher levels may be normal

Huggins, JL; Raverty, SA; Norman, SA; Calambokidis, J; Gaydos, JK; Duffield, DA; Lambourn, DM; Rice, JM; Hanson, B; Wilkinson, K; Jeffries, SJ; Norberg, B; Barre, L
Diseases of Aquatic Organisms (2015)

In 2006, a marked increase in harbor porpoise Phocoena phocoena strandings were reported in the Pacific Northwest of the USA, resulting in the declaration of an unusual mortality event (UME)…