Type D Killer Whale Illustrations (IMAGE) University of California - San Diego Caption Top. An adult male 'regular' killer whale - note the size of the white eye patch, less rounded head and dorsal fin shape. Bottom. An adult male Type D killer whale - note the tiny eye patch, more rounded head, and more narrow, pointed dorsal fin. Credit Illustrations by Uko Gorter. Usage Restrictions with credit License Licensed content 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.