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Robin Reed, 46, and his son Owen, 17, who were from Caerphilly county in south Wales, were swept out to sea on 13 April while swimming at a beach without lifeguards in Seventeen Seventy, Queensland.

There is only one beach patrolled by lifeguards within a 50-kilometre radius of Seventeen Seventy.

South of where he was attacked, 15-year-old Phoebe Beltran was doing a swim test in Long Beach to become a lifeguard when a sea lion repeatedly bit her.

On Sunday, Phoebe Beltran was completing her swim test for the cadet junior lifeguard program near 2100 Ocean Boulevard, she told The Times.

A researcher chats with lifeguards on a boat patrolling the waters where surfers and sharks mingle in close proximity.