The mother of a 25-year-old man who vanished after jumping off rocks into the ocean in WA's South West wants marine safety taught at school and warning signs at the tourist spot.
Matthias Ashley Bache was with his friend Arthur Parsons on March 8 last year at Injidup natural spa near Yallingup when he surfaced briefly face-down and then disappeared.
An inquest was held in Perth on Friday to examine the circumstances surrounding his suspected death and deputy state coroner Evelyn Vicker said she would rule that Mr Bache was dead.
Mr Bache's mother Jane told reporters outside the WA Coroner's Court that she wanted marine safety awareness taught in primary schools and signage at the spot to show that drownings happened there.
"(People need) an understanding of how to detect rips and currents and to understand the dangers of the ocean," she said.
However Ms Bache said she felt fortunate to live in Australia where people rallied together to support her family and tried to rescue her son.
She choked up when remembering her son and said for her he would always be alive.
"His spirit will live on because he's just such an amazing boy," she said.
Senior Constable Adrian Koekemoer testified that while there was no direct evidence to suggest Mr Bache was dead, it was highly unlikely that he was alive.
He said Mr Bache had not been admitted to any hospitals since his disappearance, had not accessed his bank account nor had any contact with his family.
Sen Const Koekemoer said there was a two-metre swell that day and he believed Mr Bache had suffered an injury, was washed away and drowned.
Ms Vicker said she was unsure whether she would rule the manner of death was an accident or misadventure.
"It's a tragedy is all I can say and you have our best sympathy," she told Mr Bache's mother and brother.