People magazine said Osbourne, who was on his honeymoon at the time, performed CPR on the woman, using training he received as a police reservist.
"I am not an EMT or paramedic, but I have assisted in resuscitating individuals in the past," Osbourne said.
Osbourne said the woman had been pulled from the ocean and was being given CPR by the other onlookers by the time he got to the scene, People said.
DISCUSS AND COMMENT ON THIS STORY Reality TV World now offers Facebook Comments on our stories. To post a comment, log into Facebook and then 'Add' your comment. To report spam or abuse, click the 'X' in the upper right corner of the comment box.