<br /> <p>Footage captures the moment a mother orca and her calf chase a sea lion in San Juan Island, Washington, on May 16.</p><p>Traci Walter operates whale watching tours in San Juan Island, and her tour group got to witness a mama killer whale teaching her calf to hunt.</p><br /><p>Walter told Storyful these killer whales only feed on marine mammals and live in smaller family groups. This group is known to Walter as the T123’s. The family includes a 32-year-old mother named T123 “Sidney,” her 17-year-old son named T123A “Stanley” and her 5-year-old daughter named T123C “Lucky.”</p><br /><p>The whales were pursuing the world’s largest sea lion, a Steller sea lion. “They did not kill and consume the sea lion but perhaps used it as a teaching opportunity for the younger calf who was right in the action for a good part of it,” said Walter. Credit: Western Prince Whale Watching via Storyful</p><br />
