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Jeff Pawloski, a researcher at the Hawaii Institute of Marine Biology, part of the University of Hawaii, collects a saliva sample from the mouth of Kina, a false killer whale (Pseudorca crassidens). Kina has been trained to allow samples to be taken, which researchers will use to determine the composition of the saliva and to measure the hormone levels of the animal.
Image credit: Karen Pearce, National Science Foundation
