Killer Whale J1 (image) NOAA Fisheries West Coast Region Share Print E-Mail Caption The Southern Resident killer whale J1, shown here in background, is one of two males in the population that has fathered more than half of the sampled calves since 1990. The killer whale breaching in the foreground is unknown. Credit Candice Emmons/NOAA Fisheries Usage Restrictions CREDIT: Candice Emmons/NOAA Fisheries Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.