May 30, 2018 8:37 am Six Flags Discovery Kingdom Reveals Newborn Sea Lion's Name It’s a girl! The new California sea lion born on May 20 at Six Flags Discovery Kingdom in Vallejo has been determined to be a female. Her name? Missy, the theme park announced. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks