Cape Town - A Cape Town woman drowned while heroically saving her son in Mossel Bay, southern Cape police have confirmed.Anya Johnson, an aftercare supervisor at Grove Primary in Claremont, died last Wednesday at the Bay View Hospital.Police spokesperson Captain Malcolm Pojie told News24 that the woman, who had been on holiday at the time, was swimming with her two children at Boggoms Bay when one of them was caught in a riptide."She managed to save the teenager and was swept out to sea. Bystanders who had been at the beach at the time managed to get her out of the water and she was taken to hospital," he said.She later died.The woman’s son escaped unscathed, Pojie said. The boy's age could not immediately be confirmed. "An inquest docket was opened into the 45-year-old woman’s death," Pojie said.Grove Primary, on its Facebook page, confirmed Johnson’s death last week."We extend our condolences to her beloved family. Please keep them all in your thoughts and prayers," the school wrote.