A frantic rescue unfolded at a Santa Cruz beach when a child was swept into powerful, tsunami-like waves, prompting a teenage lifeguard to dive into the life-threatening surf.

The lifeguard — who witnesses said carried out one of the most heroic rescues they had ever seen — was identified as just a 16-year-old high school student, reunited with his family and was evaluated by paramedics.

Witnesses commenting on the video said the struggle against the waves lasted much longer than the footage shows, adding that Ryder never let go of the child despite the relentless surf.

Ryder's mother, thanking supporters for the outpouring of praise, responded to requests for a GoFundMe page by saying her son was simply doing what he loves.

"I am blown away by the love, kindness, gratitude and respect you're sending his way!" she said.

"A few people have asked about a GoFundMe - but honestly he was just doing the job that he absolutely loves."

Instead, she encouraged those wishing to support Ryder to donate to the Santa Cruz County Parks Department's Junior Guards program, where she said Ryder and many of his fellow lifeguards trained before becoming old enough to serve.

She also argued that lifeguards should be recognized as first responders because of the dangerous surf conditions they face along the Santa Cruz coastline.

Eric Trump also reposted the rescue video with praise.

"Give this 16-year-old lifeguard the highest civilian honor. This is truly the best of America! Well done!," he said.