On December 30, 2025, a fatal shark attack involving a triathlete was reported in California, in the Pacific Ocean. Authorities launched an investigation into the circumstances surrounding the incident.

According to available reporting, the victim was a woman approximately 55 years of age. Her body was recovered following the incident. No shark species was identified in connection with the attack.

The coordinates associated with the incident place it in central California. No further details regarding the victim's name, the specific beach location, or the activity being undertaken at the time were confirmed in the available sources.