Robert Irwin, the 21-year-old Australian conservationist, delivered a high-energy debut on the U.S. edition of Dancing with the Stars on Tuesday, earning a combined score of 15 out of 20 and prompting an enthusiastic response from both the live audience and online viewers.

Dancing with partner Witney Carson to Steppenwolf's "Born to Be Wild," Irwin executed a vigorous jive featuring high leaps, floor slides and intricate footwork. The routine opened with a playful nod to his Australia Zoo roots — Irwin ripped off a khaki top to reveal a glamorous shirt beneath — and built to an athletic climax that prompted a standing ovation from his family in the studio audience.

Judge Bruno Tonioli began his critique with a tease before praising the performance, giving the pair 7 out of 10 and calling the routine "absolutely brilliant." Derek Hough awarded an 8, saying Irwin "owned those shoes" in reference to the family connection to former contestant Bindi Irwin; Hough danced with Bindi on the show in 2015. The judges' marks left Irwin and Carson tied with Whitney Leavitt for a total of 15 points.

After the routine, a winded Irwin told the judges, "We just did that," and later credited his partner for the result, conceding, "I haven't moved to music in my entire life." Cameras captured Irwin rushing to embrace sister Bindi Irwin in the audience as their mother, Terri, and Bindi's husband, Chandler Powell, looked on.

A clip of the performance posted online drew more than 14,000 views within three hours of release and generated an outpouring of viewer praise. Comments on social platforms called the routine "incredible," "epic" and compared it to a finale-caliber performance, with some fans predicting Irwin could win the season.

Ahead of the live show, members of the Irwin family shared photographs of their arrival on Instagram. Terri Irwin wore a red midi dress by Leo Lin, Bindi Irwin chose a voluminous black gown, Grace, 4, wore a baby-blue dress, and Chandler Powell appeared in a navy suit. Robert posted a group photo with the caption, "The fam has arrived for the live show! Dancing with the Stars premiere here we go."

The episode marked Irwin's first appearance on the U.S. series, introducing the conservationist to a mainstream American audience beyond his work at Australia Zoo and his family's conservation profile. The immediate praise from judges, the standing-room reaction from his family and the rapid spread of the performance clip online position Irwin as an early breakout contestant in the competition.