Unna was born on 27th December 1996 to wild-caught Icelandic orcas Katina and Tilikum. In 2006, Unna gave birth to a stillborn female calf; unless Unna was artificially inseminated, the calf was inbred as Unna only lived with relatives at the time.
She was 18 years-old when she died on 21st December 2015, several days before her nineteenth birthday.