Tash McAdam is a Welsh Canadian author of several books for young people, including The Psionics series, the bestselling Blood Sport and Sink or Swim in the Orca Soundings line, and The Ooze in the Orca Anchor line. Tash identifies as trans and queer and uses the neutral pronoun they. They teach high-school English and computer science and have a couple of black belts in karate. They live in Vancouver, British Columbia.