The Oregon Human Society is investigating the Portland Aquarium after a former employee released a death log of over 200 marine animals in three months.
Vince Covino estimates that the Portland Aquarium houses 10,000 animals representing 3,000 species. Given that number, 200 deaths in three months would represent an annualized mortality rate of 8 percent.
By comparison, the much larger Oregon Coast Aquarium in Newport estimates its collection at 15,000 animals representing 250 species. Erin Paxton, public relations coordinator for the aquarium, said the Newport facility experiences an annualized mortality rate of "significantly less than 1 percent."
Read more at OregonLive.com.