SEMPORNA: A 66-year-old tourist from China died after losing consciousness while snorkelling with her family off Pom Pom Island here yesterday.

In the12.30pm incident, the woman from Yunnan, China, reportedly complained of feeling unwell before asking to be taken back onto the boat.

Semporna police chief Superintendent Tan Hiap Wah said the woman was then found unconscious after she was brought onto the boat.

"Efforts were made to perform cardiopulmonary resuscitation (CPR) on the victim, but she did not respond.

"She was then taken to Semporna Hospital for further treatment," he said in a statement today.