A desperate search continues for a two-month-old baby boy off the coast of South Australia after his mother and toddler sister were found dead in the ocean. Emergency services battled harsh weather conditions on Monday as they searched for the infant following the discovery of the bodies of 36-year-old Helena Wright and her young daughter.

The bodies were found by fishermen at the foot of cliffs at Cape Northumberland, near Port Macdonnell. Ms. Wright and her family resided in Compton, a community located about 30 kilometers north of where the tragedy occurred. She was a member of the Mt. Gambier Toy Library committee and was originally from Estonia.

South Australia Police are investigating the incident as a potential murder-suicide but have stated they are not looking for any other individuals in connection with the deaths. Authorities were alerted to the scene at 11:30 a.m. after the mother's white Isuzu M-UX was found abandoned with its engine still running at the Cape Northumberland car park.

Police Commissioner Grant Stevens indicated that authorities are operating under the assumption that the baby remains in the waters, which are described as shark-infested and treacherous. A coordinated search effort involving police, the Country Fire Service, State Emergency Service volunteers, and local boaties continued on Tuesday, despite challenging weather conditions including high winds and heavy swells. Some volunteer boats were forced to return to shore due to the hazardous conditions.

Local residents noted that currents at the Cape often carry debris towards Port Macdonnell. Concerns have been raised about the strong rips and the presence of sharks in the area, complicating the search for the infant.

Police have confirmed they have spoken with the father of the two children, who is also the husband of the deceased woman. Investigators believe no other person was involved in the incident. Authorities are seeking dashcam footage that might have captured Ms. Wright's 2015 Isuzu M-UX, with South Australian registration S592BJR, prior to the incident to reconstruct her final movements.

South Australian Premier Peter Malinauskas urged the public to avoid speculation, stating that the circumstances of the deaths are still unclear and under active investigation. "It's very difficult at this point in time to understand exactly what transpired here. There are a number of theories that police are actively investigating," he said. "Wherever we see the loss of anybody, it's a tragedy. When it involves children, that breaks your heart - particularly when we know there's currently a two‑month‑old baby missing."