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Death at SeaWorld

Shamu and the Dark Side of Killer Whales in Captivity
....captive orcas had higher mortality rates than wild ones; now, new analyses of data up until 2010 had confirmed that the situation..."has worsened." Captive female orcas were giving birth too young and too often, leading to a higher death rate among both adults and infants. The most common cause of death...was infection. Chronic stress might also be an important factor in weakening the animals immune response. p. 419 Death at SeaWorld