Two-thirds of all detectable orca pregnancies have ended in miscarriages over the past seven years, a new study shows.
To figure out if orcas were pregnant, the researchers trained dogs to find orca scat and then tested the scat’s hormone levels. What they found was sobering.
“Of those that we confirmed were pregnant, 31 percent of the pregnancies are successful. So 69 percent were lost,” said Sam Wasser, a University of Washington professor and study author.